nora installation guide - pharos project · page 3 of 42 general the nora ® installation guide...

nora® Installation Guide

technical information

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Contents

1. General Installation Guidelines Pages 3 - 6

2. nora pro install® system Overview Page 7

3. nora pro install® system - STEP 1, nora® membrane Pages 7 - 10

4. nora pro install® system - STEP 2, nora® primer Pages 10 - 12

5. nora pro install® system - STEP 3, nora® leveler Pages 12 - 15

6. nora pro install® system - STEP 4, nora® patch Pages 15 - 17

7. nora pro install® system - STEP 5, nora® adhesive Pages 17 - 25

a. nora® 485 and 685 Adhesives Pages 17 - 20

b. nora® 385 and 585 Adhesives Pages 20 - 23

c. nora® dryfix Tape Pages 23 - 25

8. Installing norament® and noraplan® Tiles Pages 25 - 26

9. Installing noraplan® Sheets Pages 26 - 30

a. nora® knife method Page 27

b. utility knife method Page 27

c. flash coving (boot method) Pages 28 - 29

d. sanitary base system Pages 29 - 30

10. Installing nora® wall base Page 30

11. Installing nora® stairtreads and nora® nosings Pages 31 - 33

12. nora® heat welding Pages 33 - 34

13. nora® cold welding Pages 34 - 36

a. norament® cold welding (liquid wax method) Pages 34 - 35

b. noraplan® cold welding (masking tape method) Pages 35 - 36

14. Installing norament® ingresso Pages 36 - 39

15. Technica Data Charts Pages 40-42

a. nora® Adhesives Page 40

b. nora pro install® system Page 41

c. nora® Installation Accessories Page 42

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General

The nora® Installation Guide covers the typical projects and circumstances where nora® rubber flooring is to be installed. If you

need assistance or require a project specification, please contact the nora® Technical Department at 1-800-332-NORA. The

Saety Data Sheet (SDS) shall be read and understood prior to using any nora product.

All nora products are intended for indoor use only, by professional floor installers, in high stressing commercial and industrial

sectors, e.g., hospitals, schools, labs, rail, radiant heating and castor chair traffic, etc. The nora pro install® system products shall

only be used under nora flooring; nora accepts no liability under any other manufacturer’s floor coverings. Always check the

production date, if expired, do not use. The use of any other manufacturer’s adhesive is not permitted and will void the warranty.

The area to receive flooring shall be fully enclosed, weather tight and climate controlled at the normal service ambient

temperature and humidity (except walk-in freezers or similar) or 68°F ± 5°F and 50% ± 10% ambient relative humidity (RH) for

48 hours before, during and 72 hours after the installation. nora flooring subjected to direct sunlight, for example through doors

or windows, must be covered using blinds, curtains, cardboard or similar materials throughout the installation and for a period

of 72 hours after the installation, to allow the adhesive to cure. The flooring, adhesive and all accessories shall be acclimated

within this area or nearby with the same climate conditions for at least 48 hours prior to installation.

nora flooring and nora pro install system products shall not be installed when dew point occurs (a surface temperature at which

condensation occurs). The substrate surface shall be at least 5°F above dew point when using nora products. Example: If the

ambient conditions are 70°F and 65% RH, the dew point is 57°F and you shall not proceed with the installation, unless the

surface temperature is at a minimum of 62°F. A dew point calculation chart is available upon request.

Only use a suitable vacuum cleaner or water-based sweeping compounds as required. It is the responsibility of the installing

party to determine the suitability of the subfloor being covered. Perform your own Mat Bond Tests and water droplet tests to

confirm your acceptance that the substrate and preparation is suitable for your project.

MOISTURE TESTING

nora® adhesives can be used, where appropriate on all grade levels of concrete, in the absence of excessive moisture. It is

essential that moisture testing shall be performed regardless of grade level or whether the concrete is freshly poured or classified

as an older slab. Test following the protocol of ASTM F2170 — Standard Test Method for Determining Relative Humidity in

Concrete Slabs Using in situ Probes, with Wagner Rapid RH probes only. If for any reason you are unable to drill into the

concrete, please contact the nora Technical Department.

Tested at the correct service temperature and ambient humidity, the maximum allowable results (with effective vapor retarder as

required) are as follows:

1. nora® membrane = must be surface dry (visually)

2. nora® 485, 685, 385 and 585 adhesives = 85% RH

3. nora® dryfix, stepfix and Quickfix tape adhesives = 75% RH

4. nora® leveler, primer and patch = same % RH as the adhesive being used

If the test results exceed the maximum percentage relative humidity (% RH) levels, the installation shall not proceed until either

the moisture level drops to an acceptable level; the nora membrane has been installed per the following installation guide; or an

been properly applied per that manufacturer’s instructions.

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CONCRETE SUBFLOORS

All subfloors shall be permanently dry, clean, smooth and structurally sound as per ASTM F710 — Standard Practice for

Preparing Concrete Floors to Receive Resilient Flooring and this installation guide. They shall be free of dust, solvents, paint,

wax, varnish, oil, grease, asphalt, film forming curing compounds, silicate penetrating curing compounds, sealers, hardening

or parting compounds, alkaline scales, excessive carbonation or laitance, mold, mildew, old adhesives and other extraneous

materials that may interfere with the bond. These shall be completely removed by mechanical means only. All local, state and

federal regulation shall be followed.

Concrete subfloors shall not be subject to shrinking, curling, cracking or moving in any way prior to the application of any nora

products. nora systems, Inc. accepts no liability for a failure or complaint due to slab movement of any kind. nora products

shall not be installed over expansion joints; use an industry standard expansion joint assembly. When concrete slabs have or

are suspected of having ASR (Alkali Silica Reaction) present, do not proceed; contact the nora Technical Department. Do not

use any nora product where hydrostatic pressure can occur.

0.1) having a minimum thickness of 10 mils, or meets the requirements of ASTM E1745 — Standard Specification for Water

Vapor Retarders Used in Contact with Soil or Granular Fill under Concrete Slabs. It shall be placed directly underneath the

concrete, above the granular fill or either use the nora membrane

following this installation guide, or an effective vapor epoxy surface

tested according to ASTM E96 - Standard Test Method for Water

Vapor Transmission of Materials.

On, above and below-grade concrete slabs that have a permanent

effective vapor retarder with excess moisture can be allowed to dry

naturally. Note: making the subfloor surface porous and using the

HVAC or dehumidification systems in the correct conditions may help

speed up the drying process; however, the rate at which the subfloor

will dry to aceeptable levels cannot be confirmed.

MAT BOND TEST

Conducting Mat Bond Tests and water droplet tests will help determine the compatibility of the flooring adhesive to the

substrate surface, including the preparation and all other products to be used like the nora membrane, primer, leveler or

patch. There are several factors that can influence the outcome of a bond test, therefore it is important to follow the protocol.

The responsible party must ensure that the tests are conducted only at a time when subfloor and jobsite conditions comply with

those requirements which are outlined in this installation guide and ASTM F710 – Standard Practice for Preparing Concrete

Floors to Receive Resilient Flooring.

The areas to be tested shall be fully enclosed, weather tight and either permanent or temporary climate control at normal

service ambient temperature and humidity (except walk-in freezers or similar) or 68°F ± 5°F and 50% ± 10% relative humidity

(RH) for 48 hours before and for the duration of the testing. Store all bond test materials for 48 hours in advance of the bond

tests in the area with the correct conditions to properly acclimate them.

The correct adhesive selection will be determined based upon the usage and type of nora flooring along with the type of

substrate being installed over. Select appropriate locations for the bond tests such as near walls or in light traffic areas. It is

recommended that tests be spaced ~50 feet apart throughout the designated installation area and each test plot should be

approximately 3 feet by 3 feet. If required, contact your nora® Representative for adhesive recommendations.

Remove all bond inhibiting substances and rough-up (mechanically) all slick, power troweled or burnished concrete surfaces

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appropriately. Perform a water droplet test to confirm suitability.

485 and 685 Method

Apply the nora 485 or 685 adhesive using a 1/16 V-notched trowel (ACT) and allow the appropriate open time so the

adhesive ridges can be easily bent over with little or no transfer to your finger tips. When pressed hard with your fingertip,

adhesive transfer is achieved.

Place the bond test flooring materials into the adhesive at the appropriate time and roll with a 100 lb roller to ensure adhesive

transfer to the back of the flooring. Do not uplift to check for adhesive transfer after flooring placement. Use Duct tape to

seal the edges of the flooring to the subfloor on all sides. Protect the flooring from foot traffic (for 12 hours minimum) and

rolling traffic throughout the duration of the bond test which shall be a minimum 3 days (72 hours).

385 and 585 Method

Mix and apply the nora 385 or 585 conductive adhesive using a 1/32 x 1/16 x 1/32 U-notched trowel (FFA) with an

appropriate open time, as described on the label and in this installation guide. When ready place the bond test flooring

materials into the adhesive and roll with a minimum 100 lb roller to ensure transfer to the back of the flooring.

Use Duct tape to seal the edges of the flooring to the subfloor on all sides. Re-roll the flooring about 1 hour later and as

necessary to ensure contact between the flooring, adhesive and substrate at the point of the adhesive curing. Protect the

flooring from foot traffic (for 12 hours minimum) and rolling traffic throughout the duration of the bond test which shall be a

minimum 3 days (72 hours).

Determination of the bond test success or failure is determined by the test administrator’s visual interpretation and the amount

of physical effort required removing the floor covering. If the flooring material and or adhesive can be removed easily, it may

indicate that some type of contaminant exists such as moisture in the subfloor, or perhaps a bond inhibiting substance on the

surface of the subfloor. If the flooring requires a great deal of effort to pull it up, for example where it cannot be removed

intact, the bond test can be considered successful, providing no sign of moisture is found. Wet 485 or 685 adhesive can

indicate the substrate is either too wet or the surface of the concrete is non porous.

Typically for the nora 485 and 685 adhesives, the point of failure should occur cohesively within the adhesive layer when the

test sample is removed. There should be approximately the same amount of adhesive on both the substrate and the back of the

flooring. If all or most of the adhesive is on the material backing, there is very likely either insufficient mechanical preparation

or a contaminant on the substrate. If all or most of the adhesive remains on the substrate, the adhesive most likely dried

too much before placing the material, or the material was not rolled properly. If the failure occurs within or between other

components of the flooring system, there may be a problem with those components, preparation or application method.

For the 385 and 585 adhesives, failure should be between the adhesive and either the substrate or the back of the flooring

when the sample is removed (in one inch wide strips). Removal of full tiles should be very difficult.

WATER DROPLET TEST

This shall be performed to confirm suitable porosity. Perform enough tests for porosity until you are sure the entire area is

porous. This can be done by placing a dime sized droplet of water on the surface – it shall be absorbed within one minute for

the nora membrane, or five minutes for either the 485 or 685 adhesives.

WARNINGS

Do not sand, dry sweep, dry scrape, drill, saw, shot-blast or mechanically chip or pulverize existing resilient flooring, backing,

lining felt, asphalt “cutback” adhesive or other adhesive. These products may contain asbestos fibers and/or crystalline silica.

Avoid creating dust. Inhalation of such dust is a cancer and respiratory tract hazard. Smoking by individuals exposed to

asbestos fibers greatly increases the risk of serious bodily harm. Unless positively certain that the product is a non-asbestos

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containing material, you must presume it contains asbestos. Regulations may require that the material be tested to determine

asbestos content.

Various local, state and federal government agencies have regulations governing the removal of in-place asbestos-containing

material. If you contemplate the removal of a resilient floor covering structure that contains (or is presumed to contain) asbestos,

you must review and comply with all applicable local, state and federal regulations.

The RFCI (Resilient Floor Covering Institute) “Recommended Work Practices for Removal of Resilient Floor Coverings” is a

defined set of instructions addressed to the task of removing all resilient floor-covering structures, including adhesive and

adhesive residues. For more information, contact RFCI directly at www.rfci.com or 706-882-3833.

WOOD SUBFLOORS

All wooden subfloors shall be a minimum thickness of 1-1/4 inch and double sheeted with overlapping joints using APA

(American Plywood Association) underlayment grade plywood, installed as per ASTM F1482 — Standard Practice for Installation

and Preparation of Panel Type Underlayments to Receive Resilient Flooring.

Wooden substrates shall not be in direct contact with concrete subfloors, even if built on sleepers. All suspended wood floors

shall have adequate under floor ventilation and a permanently effective vapor retarder or membrane placed directly on the

ground beneath the air space.

OTHER SUBFLOORS

Please contact the nora Technical Department for any fire retardant surfaces or specific recommendations regarding all other

substrates. Do not install over oriented strand board (OSB), particleboard, masonite, lauan or similar unstable substrates.

INFORMATION

For more information, please refer to the SDS that must be read and fully understood prior to using the product. The latest SDS,

Guide Specifications, Maintenance Guides and videos are all available at www.nora.com/us.

For copies of any of the ASTM standards or test methods, please visit www.astm.org.

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nora pro install® systemThe nora pro install® system is a unique installation system for use under nora

flooring only. This five-step system affords access to all essential flooring

installation components, from nora® membrane to nora® adhesive. Registration

for the 10-year nora pro install system warranty is required. Pre and post

installation registration forms are the responsibility of the nora® Approved

pro install system Applicator to complete and submit to the nora Technical

Department, along with any required testing reports.

For all concrete subfloors, except new construction, core samples shall be

taken per ASTM C42/C42M – Standard Test Method for Obtaining and Testing

Drilled Cores and Sawed Beams of Concrete (a copy of this Test Method

is available from www.astm.org) and a copy of the lab. Contact the nora

Technical Department for confirmation on the amount of required core samples

for your project.

The report of the cores analysis should consist of the following:

adversely influence the adhesion of vapor barrier membranes applied to concrete.

unreacted metasilicate residues.

grease residues, silicates) present within specific depth profiles of the concrete.

and pore system attributes. This data is critical for the evaluation of concrete surface integrity, as well as slab suitability.

Concrete Surface Profile (CSP) of 3

STEP 1: nora® membrane

GENERAL

Perform testing and the proper preparation protocol (as described in the opening section of this installation guide), and follow

the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage.

The nora membrane (or similar) is required when moisture levels within the concrete are too high and circumstances do not

allow sufficient drying, also for all on and below-grade slabs, if a permanently effective vapor retarder is not confirmed. The

nora membrane is a two-component 100% solids epoxy and is formulated for properly prepared substrates, such as concrete

and cement-based terrazzo. Applied in a single-coat application system, nora membrane offers low viscosity with high-density

resins that penetrates deep into the substrate and effecting consolidation well beneath the surface.

CONDITIONING

nora membrane and substrate shall be fully acclimated to 40°F – 90°F (5°C – 32°C) for a minimum of 48 hours prior, during

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and after the installation is completed. Temperature and ambient humidity variations will directly affect the curing times — they

are reduced by higher temperatures and increased with cooler temperatures.

If product has been allowed to freeze, it must be fully thawed to a liquid state before mixing.

COVERAGE

If nora membrane is being used due to lack of a confirmed effective vapor retarder, then use the 150 sqft coverage rate. If an

effective vapor retarder is confirmed or the substrate is above grade, then test following ASTM F2170 - Standard Test Method

for Determining Relative Humidity on Concrete Slabs Using in situ Probes, using Wagner Rapid RH probes only. The results

will determine the coverage rate and Dry Mils Thickness (DMT) of the nora membrane. Coverage rates are approximate and

based on good surface with a CSP of three (3). These rates should be used as a general guide only. Additional material will be

required on rough and uneven surfaces, and for saw cut and crack treatment. It is the responsibility of the flooring contractor

to ensure proper coverage.

< 90% RH, 260 sqft per unit (minimum 10 mils DMT)

< 95% RH, 200 sqft per unit (minimum 14 mils DMT)

< Surface dry (100% RH), 150 sqft per unit (minimum 18 mils DMT)

SUBFLOOR PREPARATION

Subfloors shall be surface dry, clean (uncontaminated) and structurally sound as per ASTM F710 — Standard Practice for

Preparing Concrete Floors to Receive Resilient Flooring. The surface shall be shot-blasted within one (1) inch from the edge of

the wall and have a minimum Concrete Surface Profile (CSP) of three (3). Water droplet tests shall be performed to confirm

suitable porosity. Perform enough tests for porosity until you are sure the entire area is porous. This can be done by placing

a dime size droplet of water on the surface — it will be absorbed into the concrete within one (1) minute to be considered

porous. Measure and mark out the correct per sqft for a unit (refer to the coverage).

Concrete substrate shall have finished shrinking, curling, cracking or moving in any way prior to the application of nora

membrane. nora systems, Inc. accepts no liability for a failure or complaint due to cracking, shrinking, curling or slab

movement of any kind.

They shall be free of dust, solvents, paint, wax, varnish, oil, grease, asphalt, old adhesives, and other extraneous materials that

may interfere with the bond. These shall be completely removed by shot blasting only. All local, state and federal regulations

shall be followed.

The RFCI (Resilient Floor Covering Institute) “Recommended Work Practices for Removal of Resilient Floor Coverings” are

a defined set of instructions addressed to the task of removing all resilient floor covering structures, including adhesive and

adhesive residues. For more information, contact RFCI directly at www.rfci.com or 706-82-3833

When concrete slabs have or are suspected of having ASR (Alkali Silica Reaction) present, do not use this product. Contact the

nora Technical Department for recommendations.

DORMANT SAW CUTS AND CRACKS (>1/32”)

Do not install over moving saw cuts or cracks. Remove all saw laitance, dirt, debris, coatings, sealers and visible moisture

from the dormant saw cuts and cracks. To achieve this, use a suitable dustless concrete saw with a diamond blade or similar.

This shall be filled with nora membrane mixed properly. Immediately mix in either nora® patch, nora® leveler (powder only) or

silica sand to a consistency that can be flat troweled and pressed in so that the gap is completely sealed. For wider gaps, use

a thicker mixture; for deep joints a backer rod (a minimum of 1/2” down) may be used prior to filling. Do not allow more than

48 hours between the applications of the membrane/powder mixture and nora membrane. If this happens, contact the nora

Technical Department.

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These shall not be covered or overlaid with any nora product. Use an industry standard expansion joint assembly.

Mix full units only, do not partial mix or dilute. Use a low speed drill (300 - 450 rpm) and a suitable mixing paddle. Pre-mix

Part A to a homogenous consistency. Pour both bottles of Part B into Part A and mix to a homogenous consistency. Do not mix

at high speeds (which can trap air), or over mix as the working time will be reduced.

APPLICATION

When properly mixed, immediately pour part of the unit onto the required area. Using a flat squeegee pull it tight to the

surface, leaving behind a thin layer of nora membrane. This effectively self-primes the substrate, reducing the risk of pinholes.

Wearing spiked shoes, pour the balance of the unit (within 5 - 30 minutes) on top of the first application. Then, using a 3/16

notched squeegee, spread out the nora membrane evenly within the area.

Immediately back-roll using an epoxy loop roller, or with thinner coats use a 3/8” (10mm) nap roller (pre-wet) to ensure an

even coverage. If required, back-roll to help remove any air bubbles or pinholes prior to the membrane setting.

Note: If the substrate is extremely porous, pinholes may still occur. If ANY pinholes exist, apply another application of nora

membrane within 48 hours using a flat squeegee (600-800 sqft coverage per unit). If only a few exist, they can be filled using

the five (5) minute Loctite Epoxy Instant Mix (available from most DIY stores). Manually fill ALL pinholes and allow to cure

before proceeding.

CLEAN UP

Immediately clean all tools and equipment with a clean cloth and 70% Isopropyl alcohol or liquid soap and water. Once

cured, this material can only be mechanically removed, which may damage some surfaces.

WARNING

Do not sand, dry sweep, dry scrape, drill, saw, bead-blast or mechanically chip or pulverize existing resilient flooring, backing,

lining felt, asphalt “cutback” adhesive or other adhesives. These products may contain asbestos fibers and/or crystalline

silica. Avoid creating dust. Unless positively certain that the product is a non-asbestos containing material, you must assume it

contains asbestos. Regulations may require that the material be tested to determine asbestos content.


material. If you complete the removal of a resilient floor covering structure that contains (or is presumed to contain) asbestos,


PRECAUTIONS

Keep out of reach of children. Keep container closed during storage. Avoid contact with eyes and skin. Use of protective gloves

(rubber), safety glasses and a suitable dust mask is recommended. Do not swallow.

DISPOSAL

Disposal should be in accordance with local, state and federal regulations. Do not allow liquid product to reach sewage

system. Mix and let product residue harden in unopened container. Dispose of as construction waste. Empty packaging can be

recycled after thorough and proper cleaning.

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Important: For more information, please refer to this installation guide and SDS, that must be fully understood prior to usage.

Available on www.nora.com/us.

OTHER LIMITATIONS

If underfoot heating is present, contact the nora Technical Department.

This is not an anti-fracture membrane, and shall not be used in areas subject to hydrostatic pressure.

Only for indoor use under nora flooring by professional installers.

Do not apply on wet surfaces.

Check the production date, if expired do not use.

Do not use on subfloors that are subject to freeze/thaw cycles.

Do not use over any substrates containing asbestos.

Do not acid-etch surfaces before applying the nora membrane.

Protect from freezing; if frozen, thaw and mix prior to use.

Working time is ~40 minutes at 73°F (23°C), reduced by higher temperatures.

Do not traffic or cover until cured ~6 hours (tack-free touch), reduced by higher temperatures.

GENERAL


the appropriate sections of the guide for installing flooring, substrate preparation and adhesive usage. nora® primer is always

required to be used directly over the nora membrane, prior to any nora leveler or patch. Priming is also required when nora

leveler is used over other suitable substrates.

CONDITIONING

nora primer and substrate shall be fully acclimated to 60°F – 90°F (15°C – 32°C) for a minimum of 48 hours prior, during and

48 hours after the installation is complete. Temperature, air flow and ambient humidity variations will directly affect the cure

and drying times — they are reduced by higher temperatures and increased with cooler temperatures.

CONCRETE PREPARATION

Test following the protocol of ASTM F2170 - Standard Test Method for Determining Relative Humidity in Concrete Slabs

Using in situ Probes, with Wagner Rapid RH probes only. Tested at the correct service temperature and ambient humidity,

the maximum allowable shall be the same as the adhesive being used. If the test results exceed the limitation, the installation

shall not proceed until the moisture level lowers to an acceptable level, or use the nora membrane (or similar) following this

installation guide.

Note: Making the subfloor surface porous and using the HVAC or Dehumidification systems with good air flow, in the correct

conditions may help speed up the drying process, however, the rate at which the subfloor will dry cannot be confirmed.

Substrate shall be dry, clean (without any contaminates or bond breakers) and structurally sound as per ASTM F710 - Standard

Practice for Preparing Concrete Floors to Receive Resilient Flooring. Use only water based sweeping compounds or a suitable

vacuum cleaner as required.

STEP 2: nora® primer

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On and below-grade slabs shall have a confirmed permanently effective vapor retarder directly under the concrete.

Alternatively, the nora membrane shall be used first following the directions. Concrete substrate shall have finished shrinking,

curling, cracking or moving in any way prior to the application of nora leveler. nora systems, Inc. accepts no liability for a

failure or complaint due to cracking, shrinking, curling or slab movement of any kind.

They shall be free of dust, solvents, paint, wax, varnish, oil, grease, asphalt, old adhesives and other extraneous materials

that may interfere with the bond. These shall be completely removed by mechanical means only. All local, state and federal

regulations shall be followed.

The RFCI (Resilient Floor Covering Institute) “Recommended Work Practices for Removal of Resilient Floor Coverings” are

a defined set of instructions addressed to the task of removing all resilient floor covering structures, including adhesive and

adhesive residues. For more information, contact RFCI directly at www.rfci.com or 706-882-3833

When concrete slabs have or are suspected of having ASR (Alkali Silica Reaction) present, do not use this product. Contact the


MEMBRANE PREPARATION

For applications direct to the nora membrane, it shall be tack-free (approximately 6 hours).

OTHER SUBFLOOR PREPARATION

For all other substrates, please contact the nora Technical Department.

Over non porous surface: apply nora primer undiluted (no water or mixing required).

Over porous, absorbent surfaces (profiled concrete): dilute nora primer with water from 1:1, mix in a separate clean

container with a low speed mixer (at about 300 rpm), and paddle to a homogenous consistency. Do not mix at high

speeds, which may cause product foaming. Note: Two applications are required when porous.

Over gypsum substrates: contact the nora Technical Department immediately.

DISPOSAL






Note: If product has been allowed to freeze, it must be fully thawed to a liquid state and mixed with a suitable drill and paddle

before proceeding. Check the production date, and if expired do not use.

APPLICATION

complete, thin film of product, without puddles or voids.

Note: nora leveler or patch can typically be applied at about 2 to 4 hours when tack free, and within a maximum of 24 hours.

If exceeded, re-apply a second, undiluted coat and install underlayment within 24 hours. If that is missed again, remove primer

mechanically and start again

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OTHER LIMITATIONS


Contact the nora Technical Department if underfloor heating is present.

Do not install over substrates containing asbestos.

Do not acid-etch surfaces before applying the nora primer.

Protect from freezing; if frozen, thaw and mix prior to use.

Insufficient primer may cause pinholes or delamination of the leveler or patch.

CLEAN UP

Immediately clean all tools and equipment with 70% Isopropyl alcohol or liquid soap and water. Once cured, this material can

only be mechanically removed, which may damage some surfaces.

GENERAL


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. nora leveler requires

the use of nora primer prior to its application following this installation guide.

Installations may be barrel/drill mixed or for large applications, a suitable pump at a minimum thickness of 1/8”. All subfloors

shall be prepared as detailed in this installation guide and ASTM F710 - Standard Practice for Preparing Concrete Floors to

Receive Resilient Flooring. Priming first with nora primer is required over all suitable porous and non-porous substrates.

CONDITIONING

The required area and leveler shall be fully acclimated to 50°F – 95°F (10°C – 35°C) and be as dry as possible, for a minimum

of 48 hours prior, during and until the leveler is dry. Note: Temperature and ambient relative humidity variations will directly

affect the cure and drying times.

CONCRETE SUBFLOOR PREPARATION

It is the responsibility of the flooring contractor to ensure the suitability of the substrate. Test following the protocol of ASTM

F2170 - Standard Test Method for Determining Relative Humidity in Concrete Slabs Using in situ Probes, with Wagner Rapid

RH probes only. The results shall not exceed the maximum allowable for the selected nora adhesive. Substrate shall be dry,

clean (without any contaminates or bond breakers), structurally sound, as per ASTM F710 - Standard Practice for Preparing

Concrete Floors to Receive Resilient Flooring, and primed first with nora primer following the directions.

If test results exceed the limitations, the installation shall not proceed until the moisture level lowers to an acceptable level, or

use the nora membrane (or similar) following this installation guide.

Note: Making the subfloor surface porous and using HVAC or Dehumidification systems with good air flow in the correct

conditions may help speed up the drying process. However, the rate at which the subfloor will dry cannot be confirmed. Use

only water based sweeping compounds or a suitable vacuum cleaner as required.

STEP 3: nora® leveler

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Alternatively, the nora membrane shall be used first, following this installation guide. Concrete substrate shall have finished

shrinking, curling, cracking or moving in any way prior to the application of nora leveler. nora systems, Inc. accepts no liability

for a failure or complaint due to cracking, shrinking, curling or slab movement of any kind. They shall be free of dust, solvents,

paint, wax, varnish, oil, grease, asphalt, old adhesives and other extraneous materials that may interfere with the bond. These

shall be completely removed by mechanical means only. All local, state and federal regulations shall be followed.




When concrete slabs have or are suspected of having ASR (Alkali Silica Reaction) present, do not use this product, contact the


WOOD SUBFLOOR PREPARATION

All wooden subfloors shall be primed as directed and be a minimum thickness of 1 1/4”. Double sheet with overlapping joints

using APA (American Plywood Association) underlayment grade plywood, installed as per ASTM F1482 - Standard Practice for

Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring and this installation guide.

OTHER SUBFLOORS


substrates. Do not install over oriented strand board (OSB), particle board, masonite, lauan, or similar unstable substrates.

PRIMING

For porous substrates, pre dilute with water 1:1. For non-porous substrates, no mixing required. For gypsum substrates, contact

use a clean broom. Ensure a complete, thin film of product without any puddles or voids.

Note: Two applications will be required for porous substrates. nora leveler can typically be applied at about 2 to 4 hours when

tack free, and within a maximum of 24 hours. If exceeded, re-apply a second, undiluted coat and install underlayment within

24 hours. If that is missed again, remove primer mechanically and start again. An insufficient amount of primer may cause

pinholes to form in the underlayment, or a weak bond resulting in delamination.

nora leveler is very fluid once it is mixed correctly. Prevent leveler from seeping through the holes in the floor. Pipes, holes and

penetrations should be blocked or filled with caulking, grout or fiberglass insulation prior to the application.

DORMANT SAW CUTS, CRACK INDUCERS AND CRACKS (>1/32”)

Do not install over moving cracks. For permanently dry slabs and without heavy rolling loads, nora leveler may be used.

Remove all saw laitance, dirt, debris, coatings, sealers and visible moisture from the dormant saw cuts. Use a suitable dustless

concrete saw with a diamond blade or similar to achieve this. For deep joints, a backer rod (minimum of 1/2” down) may be

used prior to filling. If the moisture level is too high or for extreme rolling loads, do not fill these with nora leveler only, use the

nora membrane following the crack repair method.


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Five quarts of clean water per 50 lb bag of nora leveler.

Add the powder to the pre-measured water (do not over water) while mixing with a suitable high powered drill (500-1000rpm)

in a mixing barrel with an appropriate mixing paddle. Mix for about 30 seconds and use a margin trowel to clean the sides

of the barrel. Continue to mix for an additional 30-60 seconds (not more) to achieve a creamy, lump-free liquid consistency.

Install immediately.

Deep pours that require between 1-5”, use 15 lbs of clean, dry pea gravel (diameter 1/8-3/8”) to reinforce each bag of nora

leveler. Apply 1” of leveler, then add pea gravel. Rake it in and then continue with pour.

Note: Additional patching or smoothing may be required after curing.

APPLICATION

Immediately pour the mixture in the required area using the gauge rake, set at the required thickness. Maneuver the leveler

so all of the substrate is evenly covered. Wearing spiked shoes and with a spiked roller on an extendable handle, roll back

and forth, breaking the surface tension of the wet leveler. This allows for better healing and a smoother surface. Do not turn

the roller sharply, and slow down at the end of each push or pull, as this may affect the desired finish. The working time is

approximately 15 minutes, depending on conditions; the product must be able to heal itself.

OTHER LIMITATIONS

All nora leveler shall be dry prior to installing the flooring.

Adhesive residue shall be completely removed by mechanical means.

Do not use where hydrostatic pressure can occur, or areas of permanent moisture exposure.

Do not use as a wear surface.

Do not install over substrates containing asbestos.

Contact the nora Technical Department if under floor heating is present.


Perform bond tests as required to ensure the substrate and preparation is suitable.

Use only water based sweeping compounds, or a suitable vacuum cleaner as required.

CLEAN UP

Wash tools immediately with water.

WARNING





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PRECAUTIONS

Keep out of reach of children. Keep container closed during storage. Avoid contact with eyes and skin. Use of protective gloves

(rubber), safety glasses and a suitable dust mask is recommended. Do not swallow.

DISPOSAL






GENERAL


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. nora patch may be

used as a skim coat or from featheredge up to 1 inch deep in one application. Flooring can be installed typically (skim coated)

in as little as 15 – 20 minutes if used over dry concrete or wood when unprimed.

CONDITIONING

The required area and patch shall be fully acclimated to 50°F – 95°F (10°C – 35°C) and be as dry as possible, for a minimum

of 48 hours prior, during and until the patch is dry. Note: Temperature and ambient relative humidity variations will directly

affect the cure and drying times. After the patch is “set,” fans may be used to speed up the drying process.


It is the responsibility of the flooring contractor to ensure the suitability of the substrate. For concrete substrates, test following

the protocol of ASTM F2170 - Standard Test Method for Determining Relative Humidity in Concrete Slabs Using in situ Probes,

with Wagner Rapid RH probes only. The results shall not exceed the maximum allowable for the selected nora adhesive.

Substrate shall be dry, clean (without any contaminates or bond breakers), structurally sound, as per ASTM F710 - Standard

Practice for Preparing Concrete Floors to Receive Resilient Flooring. If going over nora membrane or other suitable non-porous

substrates, the subfloor should be primed following the directions on the material label.


Alternatively, the nora membrane (or similar) shall be used first, following this installation guide. Concrete substrate shall have

finished shrinking, curling, cracking or moving in any way prior to the application of nora leveler. nora systems, Inc. accepts

no liability for a failure or complaint due to cracking, shrinking, curling or slab movement of any kind. They shall be free of

dust, solvents, paint, wax, varnish, oil, grease, asphalt, old adhesives and other extraneous materials that may interfere with the

bond. These shall be completely removed by mechanical means only. All local, state and federal regulations shall be followed.

STEP 4: nora® patch

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When concrete slabs have or are suspected of having ASR (Alkali Silica Reaction) present, do not use this product, contact the


WOOD PREPARATION

All wooden subfloors shall be a minimum thickness of 1 1/4” and double sheeted with overlapping joints using APA (American

Plywood Association) underlayment grade plywood, installed as per ASTM F1482 - Standard Practice for Installation and

Preparation of Panel Type Underlayments to Receive Resilient Flooring and this installation guide.

OTHER SUBFLOORS


substrates. Do not install over oriented strand board (OSB), particle board, masonite, lauan, or similar unstable substrates. If

any doubt exists, then bond tests shall be performed to confirm a very good bond of the entire system.

DORMANT SAW CUTS, CRACK INDUCERS AND CRACKS (>1/32”)

Do not install over moving cracks. For permanently dry slabs and without heavy rolling loads, nora patch may be used.

Remove all saw laitance, dirt, debris, coatings, sealers and visible moisture from the dormant saw cuts. Use a suitable dustless

concrete saw with a diamond blade or similar to achieve this. For deep joints, a backer rod (minimum of 1/2” down) may be

used prior to filling. If the moisture level is too high or for extreme rolling loads, do not fill these with nora leveler only, use the

nora membrane following the crack repair method.


PRIMING

When using nora patch directly over nora membrane, apply undiluted nora primer first following the directions on the label

and in this installation guide. nora patch can typically be applied within 2 to 4 hours (maximum of 24 hours). Drying times will

vary depending on porosity of the surface, temperature and humidity. If exceeded, re-apply a second, undiluted coast and

install underlayment within correct application window. If application window is missed again, remove primer mechanically and

start the installation on clean substrate.

Always add powder to the pre-measured water and do not over water. Use 1 bag of powder with 2.5 quarts of cold, clean

water (or 2 parts powder to 1 part water). Mix to a creamy, smooth, lump-free consistency using a suitable drill and paddle in

the supplied bucket.

APPLICATION

Using a steel finishing trowel held at a 45° angle, work the patch into the surface, filling all cracks and depressions in the

substrate. “Key in” but do not over trowel to achieve a surface smooth enough for the flooring to be installed over to the

satisfaction of the end user. Any lumps or ridges shall be smoothed either by light sanding when dry or the application of

another layer of patch.

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CLEAN UP

Wash tools immediately with water.

WARNING








PRECAUTIONS

Keep out of reach of children. Keep container closed during storage. Avoid contact with eyes and skin, or breathing in the dust.

Use of protective gloves (rubber), safety glasses and a suitable dust mask is recommended. Do not swallow.

DISPOSAL






nora® 485 and 685 Adhesives

GENERAL


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. Confirm that you

have the correct adhesive for the project. If unsure, please contact your local nora® Sales Representative, Customer Service

or Technical Department. These adhesives are freeze-thaw stable as determined by ASTM D7149 - Standard Practice for

Determining the Freeze Thaw Stability of Adhesives, non-flammable, water and alkali resistant.

nora 485 is a water-based acrylic adhesive that has been formulated for the installation of specific nora rubber floor coverings

(2 mm – 4 mm) on porous subfloors. nora 685 is a conductive water-based acrylic adhesive for installing the nora® ed range

of products on porous subfloors. All nora products are intended for indoor use only, by professional floor installers. nora

adhesives shall only be used under nora flooring.

STEP 5: adhesives

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CONDITIONING


temperature and humidity (except walk-in freezers or similar) or 68°F ± 5°F and 50% ± 10% ambient relative humidity (RH)

for 48 hours before, during and 72 hours after the installation. Areas of the flooring subjected to direct sunlight, for example

through doors or windows, must have them covered using blinds, curtains, cardboard or similar materials for 24 hours before,

throughout and for a period of 72 hours after the installation to allow the adhesive to cure. The flooring, adhesive and all

accessories shall be acclimated within this area or nearby with the same climate conditions for at least 48 hours prior to

installation.


All subfloors shall be porous, permanently dry, clean, smooth and structurally sound as per ASTM F710 — Standard Practice

for Preparing Concrete Floors to Receive Resilient Flooring and the nora Installation Guide. It is the responsibility of the

installing party to determine the suitability and porosity of the subfloor being covered. To determine if a subfloor is porous,

perform the water droplet test. For installed leveler or patch (over non porous substrates), they shall be a minimum of 1/8 inch

deep to be considered porous.

Water Droplet Test

To be able to use the nora 485 or 685 correctly, the substrate shall be porous as detailed within ASTM F710. To confirm this

and to satisfy the installer that the substrate is indeed porous, perform the water droplet test in a sufficient number of places

throughout the project. To perform the water droplet test, simply place a dime sized droplet of water on clean concrete (without

any patch or leveler). The water shall begin to absorb into the concrete within five minutes to be considered porous, or the

substrate shall be considered non porous.

If the concrete is non porous, polished or burnished, then mechanical preparation is required to open up the surface and make

it porous (removing whatever sealer, hardener, curing compound or other contaminate that is present or to give a mechanical

key to the adhesive). Alternatively, contact the nora Technical Department for specific recommendations. Performing Mat

Bond Tests (as detailed in the opening section of this guide) will also give a good indication of the suitability and the porosity

of the substrate. Substrate porosity directly influence not only the drying time of moisture from within the substrate, but the

working characteristics of the adhesive regarding both the open and working time. The qualified installer shall recognize and

understand this so that the adhesive is at the correct condition at the time the flooring is placed onto it. Where the substrate is

slightly porous, very porous, or if substrate porosity is not uniform, adjustments will have to be made in installation procedures

to compensate. With a less porous substrate, the adhesive will dry slower, extending the open time. Where the substrate is

more porous, the adhesive will dry more rapidly, as it will in areas subjected to air flow like near doors or windows. It is the

installer’s responsibility to recognize the working characteristics of the adhesive in all areas of all projects, and make any

necessary adjustments in preparation or installation techniques that may be required to achieve a secure bond. A small test

application of adhesive prior to beginning the installation to determine both the appropriate open and working time of the

adhesive is recommended.

nora 485 and 685 adhesives can be used, where appropriate, on all grade levels of concrete, in the absence of excessive

moisture. It is essential that moisture testing shall be performed regardless of grade level or whether the concrete is freshly

poured or classified as an older slab. Test following the protocol of ASTM F2170 — Standard Test Method for Determining

Relative Humidity in Concrete Slabs Using in situ Probes, with Wagner Rapid RH probes only. Tested at the correct service

temperature and ambient humidity, the maximum allowable for these adhesives shall be 85% RH.

If the test results exceed the limitations (85% RH), the installation shall not proceed until the moisture level lowers to an

acceptable level, or use the nora membrane (or similar) following this installation guide. Note: Making the subfloor surface

porous and using the HVAC or dehumidification systems in the correct conditions may help speed up the drying process,

however, the rate at which the subfloor will dry cannot be confirmed.

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concrete, above the granular fill or use the nora membrane following the nora

Installation Guide.


products. nora systems, Inc. accepts no liability for a failure or complaint due to slab movement of any kind. They shall be free

of dust, solvents, paint, wax, varnish, oil, grease, asphalt, old adhesives and other extraneous materials that may interfere with

the bond. These shall be completely removed by mechanical means only. Dustless diamond grinding is the preferred method

to remove contaminants and bond breakers, as it also helps to level the concrete. All local, state and federal regulations shall

be followed.

Cracks and uneven surfaces must be filled using nora membrane and a leveler or patch as described within this installation

guide. nora products shall not be installed over expansion joints. Use an industry standard expansion joint assembly. When

concrete slabs have or are suspected of having ASR (Alkali Silica Reaction) present or an unsuitable surface, do not proceed,

contact the nora Technical Department immediately. Do not use any nora product where hydrostatic pressure can occur.

WOOD SUBSTRATE PREPARATION

All wooden subfloors shall be porous with a minimum thickness of 1-1/4 inch and double sheeted with overlapping joints using

APA (American Plywood Association) underlayment grade plywood, installed as per ASTM F1482 — Standard Practice for

Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring and this Installation Guide.




OTHER SUBFLOORS



ESD FLOORING (ed PRODUCTS)

For ESD flooring installations, nora® copper tape must be used with the proper conductive adhesive. In rooms

< 2,500 square feet in size, the copper strip (minimum 4 feet long) shall be applied to the substrate and extended to a pre-

determined grounding point (to be connected by a qualified electrician). In rooms > 2,500 square feet, additional grounding

points shall be pre-defined and also have the copper tape installed.

INSTALLATION

Following the appropriate section within this installation guide, dry-lay the flooring including all seams and perimeter cuts, only

dry-lay that which will be adhered on that day. Carefully pull back sheet flooring, or for tile neatly stack (in order), removing a

workable section, but not so large as to avoid late placement.

Apply the adhesive using a 1/16 inch x 1/16 inch x 1/16 inch V-notched trowel (ACT), evenly

without the formation of puddles or any voids. Do not apply fresh adhesive over drying adhesive

as this will result in telegraphing of adhesive lines. Coverage is approximately 160 –180 square feet per gallon for a CSP 1

(depending on the substrate). Replace worn trowels to ensure proper spread rate, do not re-notch.

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Once troweled properly, the adhesive shall have sufficient open time, this will depend upon the ambient temperature and

humidity, substrate porosity, humidity and air flow. The acceptable condition of the adhesive is best described as follows: The

adhesive ridges can be easily bent over with little or no transfer to your finger tips. When pressed hard with your finger tip,

transfer should be achieved. Do not install if the adhesive becomes too dry and the ridges are not easily bent over, if it is –

remove and replace it. Do not uplift to check for adhesive transfer after flooring placement. A small test application prior to

beginning the installation to determine both the appropriate open and working time of the adhesive is recommended.

CLEAN UP

Remove any fresh adhesive from the surface of the flooring with water and a clean cloth. Dried adhesive may be removed

using 70% Isopropyl alcohol and a clean cloth. Do not wash or perform any maintenance of the floor for a minimum of 72

hours after the installation is completed to allow adhesive to cure.

PRECAUTION

Prevent all traffic for a minimum of 12 hours and heavy traffic and rolling loads for 72 hours. If required, after 12 hours protect

the flooring using plywood, masonite or appropriate thick enough similar product ensuring first that the flooring surface is

free of all debris. Lay the panels so that the edges form a butt joint and tape the joint to prevent both movement and debris

entrapment underneath them.

DISPOSAL






nora® 385 and 585 Adhesives

GENERAL


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. Confirm that you

have the correct adhesive for the project. If unsure, please contact your local nora Sales Representative, Customer Service or

Technical Department.

nora 385 is a two-component polyurethane adhesive that has been formulated for the installation of specific nora rubber

flooring. nora 585 is a conductive two-component polyurethane adhesive for the nora ed range of flooring. When parts A and

B are thoroughly mixed together, they form a reactive adhesive that cures to a tough, flexible film with a good resistance to

surface moisture and many chemicals. All nora products are intended for indoor use only, by professional floor installers. nora

adhesives shall only be used under nora flooring.

CONDITIONING

The area to receive flooring, shall be fully enclosed, weather tight and climate controlled at the normal service ambient

temperature and humidity (except walk in freezers or similar) or 68°F ± 5°F and 50% ± 10% ambient relative humidity (RH)

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for 48 hours before, during and 72 hours after the installation. The flooring, adhesive and all accessories shall be acclimated

within this area or nearby with the same climate conditions for at least 48 hours prior to installation. Areas of the flooring

subjected to direct sunlight for example through doors or windows must have them covered using blinds, curtains, cardboard

or similar for 24 hours prior, throughout and for a period of 72 hours after the installation to allow the adhesive to cure.

CONCRETE SUBSTRATE PREPARATION


Preparing Concrete Floors to Receive Resilient Flooring and the nora Installation Guide. It is the responsibility of the installing

party to determine the suitability of the subfloor being covered.

nora 385 and 585 adhesives can be used, where appropriate, on all grade levels of concrete, in the absence of excessive




temperature and ambient humidity, the maximum allowable shall be 85% RH for these adhesives.


acceptable level, or use the nora membrane following this installation guide. Note: Making the subfloor surface porous and

using the HVAC or dehumidification systems in the correct conditions may help speed up the drying process, however, the rate

at which the subfloor will dry cannot be confirmed.



concrete, above the granular fill or use the nora membrane following this Installation Guide.

All burnished or polished concrete surfaces shall be mechanically abraded or roughed-up sufficiently to provide a mechanical

key for the adhesive. Performing Mat Bond Tests (as detailed in the opening section of this guide) will also give a good

indication of the suitability and the porosity of the substrate. Substrate porosity directly influence not only the drying time of

moisture from within the substrate but the working characteristics of the adhesive regarding both the open and working time.






be followed.

Cracks and uneven surfaces must be filled using nora membrane and a leveler or patch as described in this installation guide.

nora products shall not be installed over expansion joints — use an industry standard expansion joint assembly. When concrete

slabs have or are suspected of having ASR (Alkali Silica Reaction) present or unsuitable surface, do not proceed, contact the

nora Technical Department immediately. Do not use any nora product where hydrostatic pressure can occur.



(American Plywood Association) underlayment grade plywood, installed as per ASTM F1482 — Standard Practice for

Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring and this Installation Guide.


of 42



OTHER SUBFLOORS




For ESD flooring installations, nora copper tape must be used with the proper conductive adhesive. In rooms

< 2,500 square feet in size the copper strip (minimum 4 feet long) shall be applied to the substrate and extended to a

predetermined grounding point (to be connected by a qualified electrician). In rooms > 2,500 square feet, additional

grounding points shall be predefined and also have the copper tape installed.

INSTALLATION

Following the appropriate section within this installation guide, dry-lay the flooring including all seams and perimeter cuts; only

dry-lay that which will be adhered on that day. Carefully pull back sheet flooring, or for tile neatly stack (in order), removing a

workable section not so large, as to avoid late placement.

Apply the adhesive using a 1/32 inch x 1/16 inch x 1/32 inch U-notched trowel (FFA), evenly

without the formation of puddles or any voids. Do not apply fresh adhesive over drying adhesive,

as this will result in telegraphing of adhesive lines. Coverage is approximately 170 – 190 square feet per gallon for a CSP 1.

Replace worn trowels to ensure proper spread rate, do not re-notch.

Once troweled properly, the adhesive shall have sufficient open time, this will depend upon the ambient temperature, humidity,

and substrate porosity. While it is possible to lay the flooring into the adhesive after 15 minutes (may be preferred for small

areas), it is recommended to allow the adhesive to begin to tack up (sticky when touched lightly with your finger tip) as this will

help prevent the flooring from sliding on the wet adhesive and the adhesive bleeding through the seams. It is better to wait

than spend the same amount of time cleaning up the adhesive.

Immediately roll in both directions utilizing a 100 lb three-section roller. Re-roll again in both directions after approximately

60 minutes. If required, place weights on any lifting edges or corners to ensure proper bonding. Repeat the procedure for the

remainder of the project.

Add all of part B to part A and mix until homogenous (without streaks), using a slow speed drill (<150 rpm), fitted with a

suitable mixing spindle approximately 3 inches in diameter. Note: Do not partial mix units.

CLEAN UP

Remove any fresh adhesive from the surface of the flooring with 70% Isopropyl alcohol or liquid soap and a clean cloth. Cured

PU adhesive may not be removed without damaging the flooring. Do not wash or perform any maintenance of the floor for a

minimum of 72 hours after the installation is completed to allow adhesive to cure.

PRECAUTIONS

Prevent all traffic for a minimum of 12 hours and heavy traffic and rolling loads for 72 hours. If required, after 12 hours protect

the flooring using plywood, masonite or appropriately thick enough product ensuring first that the flooring surface is free of all

of 42

debris. Lay the panels so that the edges form a butt joint and tape the joint to prevent both movement and debris entrapment

underneath them.

DISPOSAL






nora® dryfix Tape

GENERAL


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. Confirm that you have

the correct adhesive for the project. If unsure, please contact your local nora Sales Representative, the Customer Service or

Technical Department. The flooring, adhesive and all accessories shall be acclimated within this area or nearby with the same

climate conditions for at least 48 hours prior to installation.

CONDITIONING

For at least 48 hours before starting, the area to receive flooring shall be fully enclosed, weather tight and at the normal

service temperature and ambient relative humidity that must be climate controlled and remain constant, between 60°F – 75°F

at all times. Areas of the flooring subjected to direct sunlight, for example through doors or windows, must have those covered

using blinds, curtains, cardboard or similar for 24 hours prior, throughout and for a period of 72 hours after the installation.

The flooring, adhesive and all accessories shall be acclimated within this area or nearby with the same climate conditions for at

least 48 hours prior to installation.



Preparing Concrete Floors to Receive Resilient Flooring and the nora Installation Guide. It is the responsibility of the installing


nora dryfix can be used, where appropriate, on all grade levels of concrete, in the absence of excessive moisture. It is essential

that moisture testing shall be performed regardless of grade level or whether the concrete is freshly poured or classified as an

older slab. Test following the protocol of ASTM F2170 — Standard Test Method for Determining Relative Humidity in Concrete

Slabs Using in situ Probes, with Wagner Rapid RH probes only. Tested at the correct service temperature and ambient humidity,

the maximum allowable shall be 75% RH for the nora dryfix.


acceptable level, or use the nora membrane (or similar) following this installation guide. Note: Making the subfloor surface

porous and using the HVAC or dehumidification systems in the correct conditions may help speed up the drying process,

however, the rate at which the subfloor will dry cannot be confirmed.

of 42

On and below grade concrete subfloors require a confirmed permanently effective vapor retarder with a low permeance


concrete, above the granular fill or use the nora membrane following this Installation Guide.






be followed.

Cracks and uneven surfaces must be filled using nora membrane and or leveler or patch as described within this installation

guide. When nora dryfix is to be used in operating rooms, the surface of any cementitous leveler, patch or skim coating

product shall also be primed. nora products shall not be installed over expansion joints, use an industry standard expansion

joint assembly. When concrete slabs have or are suspected of having ASR (Alkali Silica Reaction) present or an unsuitable

surface, do not proceed, contact the nora technical department immediately. Do not use any nora product where hydrostatic

pressure can occur.

For installing on existing non-cushion backed smooth resilient flooring, strip off all floor finish and dirt residue using an

appropriate stripper and pad, rinse with clean water and allow to fully dry. Check the entire area to ensure the existing flooring

is secured to the subfloor, remove and replace or repair all loose flooring and vacuum the entire area.

Note: nora systems, Inc. accepts no liability for other manufacturers’ flooring products or the possible breakdown of the

flooring bond from the subfloor for any reason.




Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring and this nora Installation Guide.




OTHER SUBSTRATE PREPARATION



APPLICATION

Unroll the nora dryfix tape into position. If required, it can be repositioned providing downward pressure was not applied.

Overlap all seams by at least 1/2 inch and press into place using a broom or flat steel trowel, to remove all air pockets. Allow

a minimum of 15 minutes before cutting the seams of the dryfix. If the tape has stretched during installation it will return to its

original size.

Trace cut all seams without damaging the subfloor, resulting in no overlaps or gaps, then remove the excess material.

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If required, the tape can now be patched to remove any debris trapped underneath (or repair any short cuts).

Dry lay the flooring as detailed in the appropriate section of this guide, then remove a workable area and vacuum both the

surface of the dryfix tape and the back of the flooring, to ensure they are both clean. Remove the protective wax paper, fold

or roll it up for ease of disposal. Replace flooring onto the exposed tape and do not stand on it until you are sure of correct

positioning, as it is still possible to reposition. Using a heavy roller or a carpet covered glider, remove any air bubbles and

ensure a good bond.

Weld all seams, this can be done immediately. For detailed instructions, please refer to the correct welding section of this

guide. nora systems, Inc. cannot accept any liability for seams that open up or peak due to climate or temperature change

when seams are not welded.

CLEAN UP

Do not wash or perform any maintenance of the floor for a minimum of 72 hours after cold welding to allow it to cure. For

heat welded seams, cleaning can begin immediately.

Installing norament® and noraplan® Tiles

GENERAL



CONDITIONING


temperature and humidity (except walk in freezers or similar) or 68°F ± 5°F and 50% ± 10% ambient relative humidity (RH)


through doors or windows, must have them covered using blinds, curtains, cardboard or similar for 24 hours prior, throughout

and for a period of 72 hours after the installation to allow the adhesive to cure. The flooring, adhesive and all accessories shall

be acclimated within this area or nearby with the same climate conditions for at least 48 hours prior to installation.

PREPARATION

The material layout should be decided by the architect, designer or end user, however, nora recommends the tiles are installed

point to point (corner to corner), with the exception of norament® serra, which can be installed in multiple ways.

The dry-lay method (installing without adhesive) is required. Locate your center lines using the 3, 4, 5 method or a carpenter’s

square. Balance the layout and mark your starting lines then vacuum the entire prepared area.

Do not dry-lay more material than will be adhered that day. Begin installing the center rows (following your center lines) in both

directions, including end cuts. The tiles have arrows on the back and these shall all point in the same direction. Dry-lay, without

stress (pressure fitting) the balance of the area including cuts, working from the center out.

Remove and neatly stack (in order for replacement later), a workable section of the dry-laid area, not too large, thus avoiding

late placement into the adhesive.

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< 2,500 square feet in size, the copper strip (minimum 4 feet long) shall be applied to the substrate and extended to a



ADHESIVE

Use the correct specified adhesive as described within this installation guide (Step 5 nora adhesive). Then repeat the process

until the required installation is completed.

Installing noraplan® Sheets

GENERAL



CONDITIONING


temperature and humidity (except walk-in freezers or similar) or 68°F ± 5°F and 50% ± 10% ambient relative humidity (RH)


through doors or windows, must have them covered using blinds, curtains, cardboard or similar for 24 hours prior, throughout

and for a period of 72 hours after the installation to allow the adhesive to cure. The flooring, adhesive and all accessories shall

be acclimated within this area or nearby with the same climate conditions for at least 48 hours prior to installation

PREPARATION

Unroll the noraplan® product and allow it to relax (lay flat before cutting), and vacuum the entire prepared area. The dry-lay

method (installing without adhesive) is required. The end user, architect or designer should decide the layout of the flooring;

however, noraplan rolls have arrows printed on the back — these arrows should all point in the same direction.



< 2,500 square feet in size the copper strip (minimum 4 feet long) shall be applied to the substrate and extended to a



INSTALLATION

Locate your start line and cut the sheets to the required lengths, placing them into the correct position. All seams shall have a

minimum 1 1/4 inch overlap. Be careful to insure that all of the tapered (uncut) edges are underneath.

of 42

The flooring pattern does not always continuously flow into the tapered edge, so

check before cutting to ensure both the complete removal of the tapered edge and

to maintain the flow of the flooring pattern (image 1).

All seams are to be double-cut using either the nora® knife or utility knife method

(described below). When cutting seams, keep in mind that all seams shall have a

neat fit (do not pressure fit), regardless of whether the seams are to be welded or

not. Then cut or trim in the sides of the area using a scriber, suitable trimming tool

or if preferred, free hand using a suitable utility knife. The end cuts may also be

completed now (better for small areas) or after adhering.

nora® knife methodDouble cut using the nora knife, using a suitable straight utility blade, the nora

knife can be used left or right handed. Use two small pieces of scrap flooring as

shown and adjust how deep you want the blade to cut (image 2).

The blade needs to cut completely through the top sheet and about 3/4 through

the bottom sheet. The blade holder (section with R and L) should be raised to the

thickness of the straight edge, so it can slide on top of it during use.

Position the straight edge about 1/2 inch from the top edge of the overlapped

flooring. Keeping the nora knife as vertical as possible, slide the blade along

the side of the straight edge while pressing down (image 3). This will remove the

factory edge and, at the same time, cut well into the bottom sheet.

Using a suitable utility knife with the same type of blade and the straight edge,

cut the last six inches of the seam at both ends, making sure you cut completely

through both layers. Then remove the trimmings, choosing one of the following

options to avoid a burred edge:

Place a screwdriver at one end horizontally between the tapered

edge waste and the balance of the lower sheet, making sure that the

screwdriver handle is over the top sheet (image 4). Slide the screwdriver

along the seam and remove the tapered edge (pulling it down).

Pull the tapered edge in a downward direction, pulling it under itself

(image 5).

utility knife methodPosition a straight edge about 1/2 inch from the top edge to be used as a guide.

Use a suitable, straight bladed utility knife, double cut through both the top sheet

and approximately 3/4 of the way through the bottom sheet. Make sure that while

cutting, hold the utility knife as vertical as possible. Then remove the trimmings,

choosing one of the options as detailed in the nora knife method.

ACOUSTIC FLOORING

Using either the nora knife or utility knife methods (above), double cut through both the top sheet and approximately 3/4 of the

way through the bottom sheet.

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Use a suitable utility knife with a large hook blade, complete the cut through the

bottom sheet, holding the knife at a slight angle, resulting in a slight undercut

edge, and remove the trimmings (image 1). Note: All noraplan® acoustic seams

must be heat or cold welded.

FLASH COVING (BOOT METHOD)

General


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. Note: A video of this

process is available on www.nora.com/us.

Wall Preparation

At the intersection between the wall and subfloor, no gap should be so wide that the cove strip cannot be installed correctly.

If it is, then it shall be filled and smoothed using a suitable product before installation. Ensure that the wall is dry, smooth and

clean. If necessary, prime first using nora primer applied with a small roller or paint brush.

Installation

Install any required cove capping strip following the manufacturer’s written

instructions. Ensure that the opening is sufficient to accommodate the thickness of

the flooring material.

Install the appropriate nora® basefix (90 for 4 inch or 145 for 6 inch) to the wall

keeping it close to the substrate (image 2).

Cut the nora® cove stick to size and miter all corners, then remove the bottom 1

inch of wax paper from the basefix and adhere the cove stick to the wall (no need

to adhere it to the subfloor).

Dry-lay the flooring as detailed within this guide, however, also make relief cuts to

avoid tears at all corners (image 3). Push the flooring into the internal corner as

far as possible without damaging the flooring. Cut a straight line in the flooring,

starting at the base of the cove stick up through to the top edge of the flooring at

a ~45° angle. Cut all the external corners using the Boot Method (detailed below).

Do not trim the perimeter or internal corners until the field flooring is adhered.

External Corners

Using a pencil and small straight edge, mark out where the cuts are required for

each boot. Begin at the outside corner of the wall and draw a line towards the

toe of the boot (45°), then approximately 2" perpendicular to the wall and then

complete the boot up the vertical. If tiles are being used, then it may be preferred

to continue the perpendicular cut to the end of the tile (image 4).

Using a small straight edge and a suitable utility knife, accurately cut and remove

the excess flooring (in one piece) from the external corner following your pencil

marks. Keep the excess for use as a template (image 5).

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Trace and cut the removed section onto a new piece of flooring. The front vertical

needs to be cut large from the 45° at the base of the cove stick (to be trimmed

after installation) (images 1 and 2).

Carefully pull back sheet flooring, or for tile neatly stack (in order), removing a

workable section not so large, as to avoid late placement. Apply the specified

adhesive following the appropriate open time and rolling requirements.

Internal Corners

Place one side into position and trim off the excess material, resulting in a straight

cut down the center of the corner and through to the base of the nora cove stick.

Repeat the process with the second side. A slight gap is acceptable as all internal

seams should to be cold welded (image 3).

Walls

Carefully fold back the flooring, a section at a time, while being careful not to

crease or tear it. Remove the wax paper from the basefix and, keeping the floor

tight to the cove stick, push lightly into the tape. Trim the flooring to fit the capping

strip and insert. When sure of correct positioning, press the flooring firmly into

place.

Boot

Carefully remove the wax paper from the basefix and accurately place the “boot”

(external corner) into the tape and press firmly into place. Trim the boot to fit the cap strip and insert. Trim the front seam

(external) using a small straight edge, resulting in a straight 1/8 inch gap. Note: All external seams shall be cold welded as

detailed within this guide.

SANITARY BASE SYSTEM

General


the appropriate sections of the guide for installing flooring, substrate preparation and adhesive usage. nora® sanitary base

should be used for the entire area (except at the doorway), or as specified.

Wall Preparation

At the intersection between the wall and subfloor any gap cannot be more than ~1/2 inch. If it is, then it shall be filled and

smoothed using a suitable product, before installation. Ensure that the wall is dry, smooth and clean. If necessary, prime first

using nora primer applied with a small roller or paint brush.

Application

Using nora basefix 145 tape, leave the wax paper on the sides of the roll and

place the roll on the cardboard disk (supplied). The disk will help keep the tape at

the correct height when applying it to the wall.

Install nora basefix 145 tape directly to the wall (~1/8 inch from the floor),

pressing firmly into place (image 4). Then install nora basefix 50 tape directly to

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the floor tight to the intersection between the wall and floor, pressing firmly into place.

Note: If the walls are not straight it may be better to install the sanitary base first and then install the flooring up to it.

Install the nora flooring, ensuring that it is left large enough to cover the edge of the basefix 50 tape following the appropriate

installation section within this guide. Then when applying the correct adhesive, go right up to the basefix 50, following the

appropriate adhesive section within this guide.

Measure, mark, cut back and remove the flooring 2 inches from the wall where the sanitary base is to be installed using a

straight edge with a sharp utility knife. Keep the line as straight as the wall will allow, a piece of waste sanitary base may be

used to check suitability of the width prior to cutting.

Dry cut the sanitary base to size, miter the foot and ensure a tight snug fit at all seams unless welding is required or specified.

When welding is required, leave an even gap between all sections of approximately 1/8 inch and when ready, follow the

appropriate section within this guide for cold welding. Remove the wax paper from the basefix tape on the floor and press the

sanitary base firmly into place, keeping it tight to the flooring. Remove the wax paper from basefix tape on the wall and press

firmly into place. Tap the sanitary base with a rubber mallet or roll with a hand roller to ensure a good bond. Note: All external

corners shall be cold welded.

nora® wall base

GENERAL


the appropriate sections of the guide for installing flooring, substrate preparation and adhesive usage.

WALL PREPARATION

At the intersection between the wall and subfloor, any gap cannot be more than approximately 1/2 inch. If it is then it shall be

filled and smoothed using a suitable product, before installation. Ensure that the wall is dry, smooth and clean. If necessary,

prime first using nora primer applied with a small roller or paint brush.

APPLICATION

nora® wall base can be adhered using either nora basefix 90 (applied to the wall) or a suitable cove base adhesive (applied

following the manufacturer’s written instructions). After cutting to fit and preparing the corners (as below), adhere it to the

wall, positioning it carefully using your chosen adhesive method and press or roll (hand roller) to obtain a strong bond. Do not

stretch the wall base during installation or it may shrink back later. To help avoid possible shrinkage, slightly compress the wall

base during installation.

INTERNAL CORNERS

These can be cut and tightly butted or completed in one piece by heating with a heat weld gun and creasing. Hold it firm in

the creased position and allow to cool, then cut and miter the foot (in situ).

These shall be heated using a heat weld gun, held in the creased position, then allowed to cool. nora systems, Inc. does not

recommend shaving the back as this will weaken the corners.

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nora® stairtreads and nora® nosings

GENERAL



nora® stairtreads are designed for straight stairs and cannot be used on winding steps. nora® nosings and standard flooring

may be used for these applications. Note: The vertical part of nosing on the stairtread or nosing is not designed to be

adhered. Avoid bending or flexing nora stairtreads, especially if they have “VI” (visually impaired) strips. If they are creased

during transportation, contact nora Technical Department before proceeding with the installation.

With steps that are wider than the stairtreads (approximately 6 feet) it will be necessary to join sections together. nora systems,

Inc. recommends staggered fitting (ashlar) of the cuts from one step to the next. Note: When ordering the stairtreads for this

purpose, ensure that they are all ordered from the same batch, and when possible use the factory edge for joining.

CONDITIONING

The area to receive stairtreads shall be fully enclosed, weather tight and climate controlled at the normal service ambient

temperature and humidity (except walk-in freezers or similar), or 68°F ± 5°F and 50% ± 10% ambient relative humidity (RH)

for 48 hours before, during and 72 hours after the installation. Areas of the flooring subjected to direct sunlight (for example

through doors or windows), must have those covered using blinds, curtains, cardboard or similar materials for 24 hours prior,

throughout and for a period of 72 hours after the installation. Stairtreads, adhesives and accessories must also be acclimated

for a minimum 48 hours in advance of the installation.

PREPARATION OF CONCRETE STAIRS

All stairs shall be permanently dry, clean, smooth and structurally sound, also prepared per ASTM F 710 — Standard Practice

for Preparing Concrete Floors to Receive Resilient Flooring. If any step is damaged, rounded, uneven or out of level, then it

shall be properly repaired by an experienced underlayment contractor, following the directions of the nora patch or leveler. The

front edge of the step shall be straight and match the shape of the stairtread profile.

nora® repair angles are available (if required) and must be mechanically fastened, using the fixings supplied. Then, using nora

patch or leveler, fully smooth the step to a suitable surface, including the nose. This area is subject to the most stress, once in

service an unprepared step can compromise adhesion and result in damage to the stairtread.

PREPARATION OF WOODEN STAIRS

All stairs shall be permanently dry, clean, smooth, level and structurally sound. Sanding is an option to make them smooth. All

nails and screws shall be countersunk and filled or removed. Loose boards

shall be screwed down or removed and replaced. All gaps and uneven or

broken areas shall be repaired or replaced. The front edge of the step shall

be straight and match the shape of the stairtread profile.

STAIRTREAD INSTALLATION

Apply nora® stepfix to the entire prepared staircase (images 1 and 2). The

stepfix should be flush with the intersection between tread and riser for both

applications of the tape, one on riser (fold over the nosing) and one on tread.

If the stepfix overlaps on the tread, or you slightly crease it during installation, 1 2

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do not be concerned. Proceed and press firmly into place with your hand.

Installation of stairtreads should begin with the bottom step. The riser portion of the top stairtread is cut off and trimmed to fit

the bottom and sides of the bottom riser. The balance of the stairtread will be required later for the top nosing. Remove the

wax paper from the bottom riser and carefully press into position the pre-cut riser and trim the excess off flush with the top of

the stair nosing.

Starting at the bottom of the staircase, cut each stairtread to fit the width of the step. The normal method is as follows. Each

step should be measured across in at least three locations:

Add 1/16 inch to the measurements and transfer them to the back of the stairtread, trim to size and undercut both sides to

ensure a snug fit. If required, uneven sides should be scribed in using a scribing bar or using a template.

Remove the paper from the tread and place the pre-cut stairtread into position (keep the stairtread nosing tight to the step

nosing) and press firmly. Fold the riser section of the stairtread back (onto the tread) and remove the paper from riser. Carefully

roll or push the stairtread tight into the intersection between the tread and riser of the step, then correctly position the riser and

press firmly. Trim the excess flush with the nosing of the step above, and repeat the process until all of the steps are completed.

TOP NOSING

Between the nosing and tread part of the stairtread there is a gradual reduction of

the material thickness. Take care to cut off the nosing (at the appropriate height)

so the thickness matches that of the landing flooring (image 1). Mark each end of

the balance of the stairtread and, using a

straight edge and suitable utility knife, remove the nosing and discard the tread

(image 2).

Cut the width of the top nosing to fit. It is the responsibility of the installing party to

determine the suitability and porosity of the subfloor and the correct adhesive for

this application.

For nora 485 adhesive, first determine if the substrate is porous. Place a dime-

sized drop of water on the substrate, near the nosing. It must begin to absorb into

the concrete within five minutes to be considered porous. For installed leveler or

patch (over non porous substrates), they shall be a minimum of 1/8 inch deep to

be considered porous. Then follow the application recommendations of the nora

485 (Step 5 adhesive) —1/16 inch V-notched trowel. Painters tape may help to

hold the nosing in position until the adhesive is set for approximately 72 hours. All traffic shall be kept off for that period. Keep

the rubber nosing tight to the step nosing.

For immediate trafficking, use a suitable solvent-free contact adhesive applied to the top step and back of the top nosing,

following the manufacturer’s written instructions. Allow the appropriate open time and install the nosing, keeping it tight to the

step nosing.

nora 385 adhesive may be used, however, painters tape will be required to hold the nosing in position until the adhesive has

fully cured approximately 72 hours. All traffic shall be kept off for that period.

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Do not use the nora stepfix to bond the top nosing unless the nosing is joined (cold welded) to the flooring. All traffic shall be

kept off until the cold weld is cured.

nora® STAIR NOSING INSTALLATION

For the installation of nora nosings, starting at the bottom of the staircase, cut the nosing to the correct width to ensure a snug

fit. Use an off-cut of the nosing and mark an adhesive line on each step.

Install the flooring on the bottom riser, using either the recommended adhesive (not PU adhesive) or a suitable solvent-free

contact adhesive following the adhesive manufacturer’s MSDS and written instructions. Allow the appropriate open time.

Use the contact adhesive applied to both the nose of the step and the underside (tread part) of the rubber nosing. After the

appropriate open time, install the rubber nosing, keeping it tight to the staircase nose, tap into place to ensure

a good bond using a rubber mallet.

Continue repeating this process up the staircase, installing treads and risers then rubber nosings until the staircase

is complete.

nora® heat welding

GENERAL


the appropriate sections of this guide for installing flooring, substrate preparation and adhesive usage. Wait a minimum of 12

hours before heat welding, unless nora dryfix tape was used to adhere the flooring, then welding can begin immediately. Heat

welding should not be used vertically or when welding to nora sanitary base. If required, these shall be cold welded.

PREPARATION

Groove the required seam with either a mechanical joint cutter or hand-grooving tool — ensure all grooves are clean. The

depth of the groove shall be controlled at approximately 2/3 the thickness of the flooring, or for acoustic products, 2/3 of the

top layer. The width of the groove shall be approximately 1/8 inch.

WELDING

Preheat the welding gun to 662°F – 752°F (350°C – 400°C). It is recommended to practice welding on a piece of scrap flooring

material first to determine the heat setting and speed, as different heat guns and cable length will affect the temperature. Note:

If the weld rod comes out during trimming, then either you welded too fast or the gun is not hot enough. Cut a length of nora®

heat weld rod sufficient to weld the entire length of the seam plus approximately

6 inches extra.

Proceed to weld the seam starting at the wall and apply slight pressure to the gun

nozzle (nose) to force the melting rod into the groove (image 1). Properly applied,

the heat weld rod will have a slightly flattened portion on either side. Allow the

rod to cool to the touch and begin the trimming or skiving process to remove the

excess weld. To help prevent scratching or scuffing of the flooring surface during

skiving, wet the weld rod about 2 inches on each side using liquid soap and water

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Using the trim plate and skiving knife, make the first cut of the weld rod

(image 1). Alternatively, a Mozart trimming knife with the 0.7 mm spacer claw

can be used. Allow the weld rod to cool to room temperature.

Next, using only the skiving knife, or Mozart (without the spacer claw), finish

trimming the remainder of the weld (image 2). The finished weld should be

smooth and on the same plane as the floor covering.

If for any reason you still have any excess weld rod left after the final trim, it

is necessary to remove this using the melting technique. After heating up a

non-sharpened metal putty knife, gently push the putty knife down the seam

weld. Excess weld material will collect on the knife resulting in a smooth and

flat seam weld.

norament® cold welding (liquid wax method)

GENERAL



hours before cold welding, unless nora dryfix tape was used to adhere the flooring, then welding can begin immediately. nora

cold weld shall be used on all vertical corners, flash coving and when required for sanitary base, or if specified.

PREPARATION

To prevent bonding of the cold weld outside of the seam, using a clean cloth apply a thin even layer of nora® liquid wax to both

sides of the seam (approximately 4 inches total), and allow to dry.


depth of the groove shall be controlled at approximately 2/3 the thickness of the flooring, or for acoustic flooring, 2/3 of the

top layer, and the width of the groove shall be approximately 1/8 inch.

For vertical seams, first apply the liquid wax to the entire seam area and allow it to dry. Using a small straight edge, trim or

groove the seam or sanitary base back, approximately 1/8 inch.

The use of gloves is recommended when using nora® cold weld. Cut off the tip of the cartridge at the first thread, screw on the

nozzle and place the cold weld cartridge into a cartridge gun. Cut off the nozzle tip at a slight angle.

APPLICATION

Inject the nora cold weld into the groove without gaps until a small bulb

develops above the seam (about size of heat weld rod) (image 1). At the end

of the seam, release the gun to prevent leaks. Any nora cold weld tracked

or spilled on the flooring shall be removed immediately using 70% Isopropyl

alcohol or liquid soap and a clean cloth, as cleaning at a later stage may not

be possible.

Press the nora cold weld into the seam using a smoothing spatula, held

nearly flat (~22° angle), resulting in a surface flush and on the same plane

as the surface of the floor (image 2). Excess cold weld must be pressed away

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on each side of the seam. It is important to develop a slight gap between the excess weld and the weld within the seam for

easy removal once cured.

For vertical corners, use a smoothing spatula to remove the excess cold weld and smooth the surface to approximately the

required finish, then wait for approximately 10 minutes for the weld to skin over. Wet your fingertips using nora liquid wax, 70%

Isopropyl alcohol or water, then finish smoothing the weld by lightly manipulating it to a slightly rounded acceptable finish.

The excess cold weld can be removed after approximately 8 –12 hours, depending

on thickness, temperature and ambient humidity. This can be done by simply

peeling it off with your fingertips (image 1). If it is still connected anywhere, then

trim it off using a sharp skiving knife.

Prevent any traffic on the seams until the nora cold weld has cured for

approximately 12 hours. Prevent any heavy rolling loads (chair castors, etc.) for

approximately 72 hours for it to fully cure. nora cold weld develops a skin after

approximately 20 – 30 minutes at 68°F (20°C) and an ambient humidity of 50%.

The skin formation is accelerated by higher temperatures and humidity, and slowed correspondingly

by lower values.

CLEAN UP

Do not wash or perform any maintenance of the floor for a minimum of 72 hours after cold welding to allow it to cure. The

initial maintenance will remove the residue of the liquid wax.

noraplan® cold welding (masking tape method)

GENERAL



hours before cold welding, unless nora dryfix tape was used to adhere the flooring, then welding can begin immediately. nora

cold weld shall be used on all vertical corners, flash coving and when required for sanitary base, or if specified.

PREPARATION

To prevent bonding of the nora cold weld outside of the required seam, use masking tape (not painters tape) to completely

cover the seam that requires welding. Approximately center the tape with the seam. Use a hand roller to firmly press the tape

down and ensure a good bond.


depth of the groove shall be controlled at approximately 2/3 the thickness of the flooring, or for acoustic flooring, 2/3 of the

top layer, and the width of the groove shall be approximately 1/8 inch.

For vertical seams, use a small straight edge to trim or groove the seam or sanitary base back, approximately 1/8 inch.

Carefully apply masking tape onto the surface of each side of the flooring, keeping the edge of the tape flush with the edge of

the flooring. Press or roll (hand roller) the tape and ensure a good bond.

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The use of gloves is recommended when using nora cold weld. Cut off the tip of the cartridge at the first thread, screw on the

nozzle and place the cold weld cartridge into a cartridge gun. Cut off the nozzle tip at an angle.

APPLICATION

Inject the nora cold weld into the groove without gaps until a small bulb develops

above the seam (about size of heat weld rod) (image 1). At the end of the seam,

release the gun to prevent leaks. Any nora cold weld tracked or spilled on the

flooring shall be removed immediately using 70% Isopropyl alcohol or liquid soap

and a clean cloth, as cleaning at a later stage may not be possible.

Press the nora cold weld into the seam using a smoothing spatula, held nearly flat

(~22° angle), resulting in a surface flush and on the same plane as the surface of

the floor (image 2). Excess cold weld must be pressed away on each side of the

seam. It is important to develop a slight gap between the excess weld and the weld

within the seam for easy removal.

For vertical internal and external corners, use a smoothing spatula to remove the

excess cold weld and smooth the surface to approximately the required finish, then

wait for approximately 10 minutes for the weld to skin over. Wet your fingertips

using nora liquid wax, 70% Isopropyl alcohol or water, then finish smoothing the

weld by lightly manipulating it to a slightly rounded acceptable finish.

The masking tape may be removed carefully now or after it has fully cured, this will be approximately 8 – 12 hours depending

on thickness, temperature and ambient humidity. This can be done by simply peeling it off with your fingertips. If the cold weld

is still connected anywhere, then carefully trim it off using a sharp skiving knife.

Prevent any traffic on the seams until the nora cold weld has cured for approximately 12 hours. Prevent any heavy rolling loads

(chair castors, etc.) for approximately 72 hours for it to fully cure. nora cold weld develops a skin after approximately 20 – 30

minutes at 68°F (20°C) and an ambient humidity of 50%. The skin formation is accelerated by higher temperatures and

humidity, and slowed correspondingly by lower values.

CLEAN UP

Do not wash or perform any maintenance of the floor for a minimum of 72 hours after cold welding to allow it to cure.

norament® ingresso Installation Guide

GENERAL



CONDITIONING

The area to receive flooring for at least 48 hours before starting shall be fully enclosed, weather tight and at the normal service

temperature and ambient relative humidity that must be climate controlled and remain constant, between 60°F – 75°F at all

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times. Areas of the flooring subjected to direct sunlight, for example through doors or windows, must have those covered

using blinds, curtains, cardboard or similar materials for 24 hours prior, throughout and for a period of 72 hours after the

installation.

RAISED ACCESS FLOORING

Raised-access floors suitable for the intended use shall be installed to a smooth, rigid, firm installation, free of rocking, rattles,

squeaks and other unacceptable performance issues. They must comply with all technical performance and installation

requirements and specifications. The subfloor must be permanently dry, free of cracks, level, pressure resistant and guarantee

tensile strength. It may not contain any dust or other separating substances such as paints, waxes, oils, etc.

In the nominal dimension range of 3.94 inches (100 mm), a deviation of 0.04 inches (1 mm) may not be exceeded with regard

to the plane (no short joints). However, all joints of the access flooring must be installed (at the same height) to a standard

accepted by the end user or representative. Any uneven joints of the access flooring may telegraph through the floor covering.

Raised-floor elements shall be realigned first as required.



Preparing Concrete Floors to Receive Resilient Flooring and the nora installation guide. It is the responsibility of the installing


The nora Quickfix system can be used, where appropriate, on all grade levels of concrete, in the absence of excessive




temperature and ambient humidity, the maximum allowable shall be 75% RH for the Quickfix system.

If the test results exceed 75% RH, the installation shall not proceed until the moisture level lowers to an acceptable level, or use

the nora membrane following the appropriate section within this guide. Note: Making the subfloor surface porous and using

the HVAC or dehumidification systems in the correct conditions may help speed up the drying process, however, the rate at

which the subfloor will dry cannot be confirmed.



concrete, above the granular fill or use the nora membrane (or similar) following this Installation Guide.






be followed.

Cracks and uneven surfaces must be filled using nora membrane and a leveler or patch as described in this installation guide.

nora products shall not be installed over expansion joints — use an industry standard expansion joint assembly. When concrete

slabs have or are suspected of having ASR (Alkali Silica Reaction) present or an unsuitable surface, do not proceed. Contact

the nora Technical Department immediately. Do not use any nora product where hydrostatic pressure can occur.

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For installing on existing non-cushion backed smooth resilient flooring, strip off all floor finish and dirt residue using an

appropriate stripper and pad, rinse with clean water and allow to fully dry. Check the entire area to ensure the existing flooring

is secured to the subfloor, remove and replace or repair all loose flooring and vacuum the entire area.

Note: nora systems, Inc. accepts no liability for other manufacturer’s flooring products or the possible breakdown of that

flooring bond from the subfloor for any reason.


All wooden subfloors shall be a minimum thickness of 1 1/4 inch and double sheeted with overlapping joints using APA


Installation and Preparation of Panel Type Underlayments to Receive Resilient Flooring and the nora Installation Guide.




OTHER SUBSTRATE PREPARATION



nora®

Using nora primer, short nap roller (3/8 inch) and a suitable paint tray, prime all

porous substrates and allow the primer to dry to a tack-free state (2 – 4 hours).

Apply the nora® Quickfix tape to the perimeter of the substrate along all walls,

connections and doorways pressing down firmly. Do not remove the wax paper

from the tape at this time.

Remove the nora Quickfix squares from the roll and apply one to the back of

the tiles at each corner (image 1). Do not remove the wax cover paper from the

squares at this time. Allow 48 hours for the tiles to acclimate. Either lay them out

across the required area or stack them neatly, not more than 10 tiles per stack.

INSTALLATION

After the 48 hours acclimatization period, the dry-lay method is required. Locate your center lines using the 3, 4, 5 method or

a carpenter’s square. Balance the layout and mark your starting lines then vacuum the entire prepared area.

Without removing the wax paper from the tape or tiles, begin installing the center rows (following your center lines) in both

directions, including end cuts. The tiles have arrows on the back and these shall all

point in the same direction. Dry-lay the tiles without stress (pressure fitting), to the

remainder of the area including cutting the edge tiles, door connections, pipes,

etc., working from the center out. Another minimum of 8 hours acclimatization

time is now required before continuing.

After the 8 hours acclimatization period, slightly raising the corners of the tiles

individually, remove the wax paper from all of the pre applied Quickfix (image 2).

Immediately roll in both directions utilizing a 100 pound three section roller. 2

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REMOVAL

The tiles can be easily removed and reused. This is done by starting from the center of the tile edges; carefully uplift each

corner keeping the tile as flat as possible. Make sure that the adhesive square remains on the back of the flooring. Do not

remove the flooring by pulling it up at a 90° angle, as the tile may become distorted and you may not be able to reinstall it.

Note: If the adhesive square is damaged, then remove and replace it.

Technical Data Wet Adhesives Dry Adhesives

nora® 385 nora® 485 nora® 585 nora® 685 nora® dryfix(flooring)

nora® basefix 50/90/145(sanitary base)

nora® stepfix(stairtread)

Packaging/Material Size 2 gal unit in 3.5 gal pail or 1 gal unit in a carton

4 gallon pail 2 gal unit in 3.5 gal pail or 1 gal unit in carton

4 gallon pail Brown box, white paper

Composition 2-part polyurethane Water-based acrylic Conductive 2-part polyurethane

Conductive water-based acrylic

Paper, fabric, polyacrylate, double sided tape

Shelf Life 12 months Minimum 2 years

Storage Room temperature Protect from sunlight, cool/dry space

Freeze/Thaw Stable per ASTM D7149 at 0°F (-18°C) Stable per ASTM D7149 at 0°F (-18°C)

Pot Life 15-20 minutes at 68°F n/a 15-20 minutes at 68°F n/a n/a

Open Time Depends on site conditions No limit, providing dust free

Working Time 45-200 minutes 15-45 minutes 45-200 minutes 15-45 minutes n/a

Moisture Tolerance Maximum 85% RH following the protocol of ASTM F2170 using Wagner Rapid RH probes only Maximum 75% RH following the protocol of ASTM F2170 using Wagner Rapid RH probes only

VOC Content Product is in compliance with SCAQMD Rule 1168 Standard for Rubber Floor Adhesives,which has a VOC limit of 60

Product is in compliance with SCAQMD Rule 1168 Standard for Rubber Floor Adhesives, which has a VOC limit of 60

0 grams/liter 0 grams/liter 0 grams/liter 0 grams/liter <0.5 grams/liter 0 grams/liter 0 grams/liter

LEED Contribution Contribute to LEED EQ Credit 4.1 - Low Emitting Materials, Adhesives & Sealants Contribute to LEED EQ Credit 4.1 - Low Emitting Materials, Adhesives & Sealants

GREENGUARD Gold Certified for Low VOC Emissions

GREENGUARD Gold Certified for Low VOC Emissions

Not yet tested Not yet testedGREENGUARD Gold Certified for Low VOC Emissions

Warranty As detailed in the nora® limited warranty As detailed in the nora® limited warranty

Application 1/32x1/16x1/32” U-notched trowel (FFA)

1/16x1/16x1/16” V-notched trowel

1/32x1/16x1/32” U-notched trowel (FFA)

1/16x1/16x1/16” V-notched trowel Utility knife and straight, sharp blade

Coverage ~170-190 sqft/gal ~160-180 sqft/gal ~170-190 sqft/gal ~160-180 sqft/gal 269 sqft Per roll size Per roll size

Working Temperature Per the flooring requirements Per the flooring requirements

Radiant Heating Yes, contact the nora® Technical Department Yes, contact the nora® Technical Department

Castor Chairs After 72 hours Immediately n/a n/a

Hospital Beds After 72 hours Immediately n/a n/a

Foot Traf!c After 12 hours Immediately n/a Immediately

Heavy Rolling Loads After 72 hours Immediately n/a n/a

Wet Cleaning After 72 hours Immediately

Technical Data - nora® Adhesives

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Technical Data Products

nora® membrane nora® primer nora® leveler nora® patch

Packaging/Material Size Part A (resin): 1.47 gallonsPart B (hardener): 0.53 gallons (2 bottles in tray)In a 2 gallon pail

2/ 2 gallon bottles in a box 50 lb placstic bag 2/ 10 lb bags in 3.5 gallon mixing pail

Shelf Life 2 years 2 years in unopened container 1 year 1 year

Storage 40°F - 95°F (4°C - 35°C); moderate, cool conditions, avoid freezing

50°F - 95°F (10°C - 35°C); protect against freezing

Keep dry in moderately cool conditions Keep dry in moderately cool conditions

Freeze/Thaw Stable per ASTM D7149 Stable per ASTM D7149 Does not need protection from freezing Does not need protection from freezing

Pot Life ~15 minutes at 70°F (21°C) 15-20 minutes at 72°F (22°C) ~15 minutes, depending on conditions, product must be able to heal

~15-20 minutes

Open Time n/a Maximum 24 hours n/a n/a

Working Time ~40 minutes at 70°F (21°C)

Reduced by higher temperatures

n/a ~15 minutes, depending on conditions, product must be able to heal

~10 minutes

Concrete Surface Pro!le CSP of 3 n/a n/a n/a

Permeability <0.1 perm per ASTM E96 at 150 sqft/unit (min 18 mils DMT)

n/a n/a n/a

Cure Time ~ 6 hours (tack-free touch), this will vary due to temperature and humidity

2-4 hours depending on substrate and ambient conditions, must be tack free to the touch

Will vary depending on thickness, porosity, ambient temperature and humidity; minimum 16 hours required before flooring installation

30-90 minutes, depending on thickness, porosity, temperature and humidity

Moisture Tolerance 90%, 95% or 100% RH depending on coverage when tested following the protocol of ASTM F2170, using Wagner Rapid RH probes

Maximum % RH should be the same as the adhesive being used when tested following the protocol of ASTM F2170

using Wagner Rapid RH probes

VOC Content 46 grams/liter; Product is in compliance with the SCAQMD Rule 1113 Standard for Architectural Coatings, which has a VOC limit of 100 grams/liter for waterproof sealers

92 grams/liter; Product is in compliance with the SCAQMD Rule 1113 Standard for Architectural Coatings, which has a VOC limit of 100 grams/liter for specialty sealers

0 grams/liter; Product is in compliance with the SCAQMD Rule 1168 Standard for Substrate Specific Applications for Porous Material, which has a VOC limit of 50 grams/liter

0 grams/liter; Product is in compliance with the SCAQMD Rule 1168 Standard for Substrate Specific Applications for Porous Material, which has a VOC limit of 50 grams/liter

LEED Contribution Contribute to LEED EQ Credit 4.2 - Low Emitting Materials, Paints & Coatings

Contribute to LEED EQ Credit 4.2 - Low Emitting Materials, Paints & Coatings

Contribute to LEED EQ Credit 4.1 - Low Emitting Materials, Adhesives & Sealants

Contribute to LEED EQ Credit 4.1 - Low Emitting Materials, Adhesives & Sealants

Warranty As detailed in the nora® limited warranty

Priming n/a n/a Yes, refer to substrate preparation Yes, nora primer on suitable non-porous substrates, including nora membrane

Application Flat squeegee then 3/16” notched squeegee, back roll as required

3/8” short nap roller Pump or gauge rakes with a spiked roller or metal straight edge finishing trowel

Metal straight edge finishing trowel

Coverage <90% RH = maximum 260 sqft<95% RH = maximum 200 sqft<100% RH = maximum 150 sqft

300-800 sqft/gal, depending on substrate ~48 sqft at 1/8”; ~24 sqft at 1/4” 200-300 sqft/10 lb bag (skim coat)

Compressive Strength n/a n/a ~1,500 psi at 24 hours, ~4,100 psi at 28 days n/a

Working Temperature 40°F - 95°F (4°C - 35°C) n/a 50°F - 95°F (10°C - 35°C) 50°F - 95°F (10°C - 35°C)

Radiant Heating Yes, contact the nora® Technical Department

Foot Traf!c After 8 hours n/a After 72 hours, Light traffic after 4-5 hours n/a

Heavy Rolling Loads 72 hours (after flooring installed) 72 hours (after flooring installed) 72 hours (after flooring installed) 5 days (after flooring installed)

Technical Data - nora pro install® system Products

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Technical Data Products

nora® cold weld nora® heat weld rod nora® liquid wax

Packaging White tube with application nozzle Round welding rod on cardboard reel Green plastic bottle with white plastic lid

Container/Material Size 10 fl oz (300ml) 328 linear feet 16 oz

Composition Silane modified polymers EVA-copolymer with pigments Water based wax emursion

Color As selected As selected Beige

Odor Slight None Slight

Hardness ~75 Shore A ~93 Shore A n/a

Shelf Life Minimum 1 year Minimum 5 years Use within 12 months of opening

Storage Protect from sunlight; store in cool and dry conditions

Storage temperature ~20°F (-6.67°C) Cool, dry conditions

Freeze/Thaw Stable per ASTM D7149 n/a Stable per ASTM D7149

VOC Content <12 grams/liter; product is in compliance with the SCAQMD Rule 1168 Standard for Architectural Sealants, which has a VOC limit of 250

None known None known

LEED Contribution Contributes to LEED EQ Credit 4.1 - Low Emitting Materials, Adhesives & Sealants

n/a n/a

Warranty As detailed in the nora® limited warranty

Coverage ~50 - 60ft (15 - 18m) ~328 linear feet ~375 linear feet at 4” wide

Working Temperature Per the flooring requirements Pre-heat welding gun to 662°F - 752°F (350°C - 400°C)

Per the flooring requirements

Cure Time 8-12 hours When cooled ~5-10 minutes

Foot Traf!c After curing, 8-12 hours When cooled 8-12 hours

Heavy Rolling Loads After 48 hours When cooled After 48 hours

Wet Cleaning After 48 hours When cooled After 48 hours

Technical Data - nora® Installation Accessories

08/

2013

nora systems, Inc.

9 Northeastern Blvd.

Salem, NH 03079

Toll free: 800-332-NORA

Phone: 603-894-1021

Fax: 603-894-6515

E-mail: [email protected]

Internet: www.nora.com/us

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