Alderprufe Tanking Slurry penetrates a short distance into capillary cracks, fissures and pores in the surface of the concrete. The presence of water and free lime causes the tanking slurry to form insoluble crystals which block the pores and prevent passage of water. This effectively makes the concrete water tight for the lifetime of the structure.

Alderprufe Tanking Slurry is a versatile internal waterproofing system that provides a solution to

water leakage, ingress and seepage in all concrete and cementitious structures.

Non-Toxic

WRAS Approved for potable water storage

use. Compliant to all relevant building

regulations and British standards such as

BS8102:2009 and BS6920:2000

Substrate Bonding

Alderprufe Tanking Slurry bonds to the applied

structure to provide excellent waterproofing

that wont peel and can be tiled/finished over.

Versatile

Alderprufe Tanking Slurry can be used on new

or existing structures and is effective on both

the positive and negative side of the affected

area. It also negates dampness in ground

water permeation, even under hydrostatic

pressure.

Effective

Alderprufe Tanking Slurry is effective against

water penetration in various environments.

Supplied as a powder in a 25Kg plastic

drum, it is mixed with water and can be

applied directly to the structure before

tiling/finishing.

Dual Action

The powder mix is applied with water to both

seal the surface and help the migratory

crystalline action soak into the substrate. The

crystalline action is reactivated should future

water contact occur providing complete,

constant water protection.

workHow

does it

Water enters concrete through pores on the surface

Silica is added and works its way into the pores

After a few days the silica has swelled due to water contact

28 days later the substrate is entirely waterproof

1 2 3 4

watertanksswimmingpoolsvehiclemaintenancepitscommercialareas

basementskitchensbathrooms

carparksgaragesfishpondsstable&kennelfloors

foundationslabstunnelsslurrypitswetroomsresidentialareasirrigationchannelsworkshopsfactoriesreservoirretainingwalls&columnswatertreatment&sewerageplantssand-cementrenderundergroundcellarssilosprestressed&pre-castconcreteunits

Approvedwww.alderburgh.comThe liquid applied crystalline waterproofing solution

LDERPRUFETANKING SLURRY

The fast leak plugging solution

LDERPRUFESUPER PLUG

Features and Benefits

Alderprufe Tanking Slurry is a versatile internal waterproofing system that provides a solution to

water leakage, ingress and seepage in all concrete and cementitious structures.

Non-Toxic

WRAS Approved for potable water storage

use. Compliant to all relevant building

regulations and British standards such as

BS8102:2009 and BS6920:2000

Substrate Bonding

Alderprufe Tanking Slurry bonds to the applied

structure to provide excellent waterproofing

that wont peel and can be tiled/finished over.

Versatile

Alderprufe Tanking Slurry can be used on new

or existing structures and is effective on both

the positive and negative side of the affected

area. It also negates dampness in ground

water permeation, even under hydrostatic

pressure.

Effective

Alderprufe Tanking Slurry is effective against

water penetration in various environments.

Supplied as a powder in a 25Kg plastic

drum, it is mixed with water and can be

applied directly to the structure before

tiling/finishing.

Dual Action

The powder mix is applied with water to both

seal the surface and help the migratory

crystalline action soak into the substrate. The

crystalline action is reactivated should future

water contact occur providing complete,

constant water protection.

workHow

does it

Water enters concrete through pores on the surface

Silica is added and works its way into the pores

After a few days the silica has swelled due to water contact

28 days later the substrate is entirely waterproof

1 2 3 4

watertanksswimmingpoolsvehiclemaintenancepitscommercialareas

basementskitchensbathrooms

carparksgaragesfishpondsstable&kennelfloors

foundationslabstunnelsslurrypitswetroomsresidentialareasirrigationchannelsworkshopsfactoriesreservoirretainingwalls&columnswatertreatment&sewerageplantssand-cementrenderundergroundcellarssilosprestressed&pre-castconcreteunits

Approvedwww.alderburgh.comThe liquid applied crystalline waterproofing solution

LDERPRUFETANKING SLURRY

The fast leak plugging solution

LDERPRUFESUPER PLUG

Features and Benefits

Specification

What is Alderprufe Tanking Slurry?

Alderprufe Tanking Slurry is a grey cementitious compound containing Portland cement, graded quartz sands, aggregates and chemical additives. It is supplied in powder form in 25Kg plastic tubs.

Alderprufe Super Plug is a cement based quick-setting hydraulic compound used to staunch running water or seepage through concrete.

Application

Alderprufe Tanking Slurry is for use where the basement is above the level of the water table and can be used for the three grades of basement protection as described in BS8102:

• Grade 1 for car parking• Grade 2 for plant rooms, workshops and garages• Grade 3 for residential and commercial areas.

Alderprufe Tanking Slurry can be applied by brush or spray to new or old structurally sound surfaces, without a bonding coat, either to the internal or the external side. It can be applied to both horizontal and vertical surfaces to create a continuous waterproofing barrier around the whole structure. All applied surfaces should be prepared to have a capillary open structure prior to use.

Alderprufe Tanking Slurry has passed the tests of WRAS Water Regulations Advisory Scheme, BS6920 and is approved for drinking water structures such as reservoirs and concrete drinking water tanks. It can also be used in swimming pools, retaining walls, tunnels and lift shafts.

Coverage

A two-layer application requires about 3Kg/m2 of powder, but this depends on the roughness of the surface.

Storage

Store in a dry place and protect from frost. The shelf life of Alderprufe Tanking Slurry is 12 months when stored in unopened containers.

Instructions for Use

Preparation

Surface preparation is crucial and must be carried out thoroughly. The surface must present an open capillary structure to allow penetration of the crystalline chemicals.

All surfaces should be clean and free of paint systems, oil, loose dust, shutter treatments, curing compounds, surface hardeners and other contaminants. Surface preparation can be carried out best by high pressure water jetting, grit blasting or mechanical scrabbling.

Large cracks and other defects can be repaired using a 3:1 sand:cement mortar gauged with SBR. Repaired areas can be coated after 24 hours, but large areas of new brickwork, poured concrete or cement renders should be allowed to cure for 3 days before application.

Timber battens and fixings must be removed before treatment commences. Provision for re-fixing of battens should be made in the wall prior to application of Tanking Slurry. Drilling for fixtures should not be carried out after tanking as the holes would provide a release for any hydrostatic pressure behind, with resultant leakage of water.

Mixing

It is important not to mix more material than can be applied within 30 minutes at 20°C, or less in hot conditions. The recommended mix ratio is approximately 2.5 to 3 parts Alderprufe Tanking Slurry to 1 part clean water by volume. For example, 5 litres of water will require 12.5-15Kg Alderprufe Tanking Slurry.

The required water should be poured into a clean bucket and the powder added slowly, mixing until a smooth lump-free consistency is achieved.

If the mixed material becomes stiff, do not re-mix with water, but discard and prepare fresh material.

Fillets

It is recommended that Alderprufe Fillet Seal is used at internal junctions of floors and walls. If it is impractical to provide a fillet between floor and wall, then a saw cut should be made in the floor slab as close to the wall as possible and Alderprufe Tanking Slurry allowed to flow into the saw cut.

Diagram 1. Internal treatment against negative pressure using a fillet and a chase.

Plugging

Where running water is evident, hydrostatic pressure must be dispersed to present a satisfactory damp substrate onto which Alderprufe Tanking Slurry can be applied.

Alderprufe Super Plug is mixed 4:1 with water and placed directly onto the leaking substrate using a gloved hand to roll the compound into a ball. Hold for 30 seconds or until the Alderprufe Super Plug is firm to the touch.

Diagram 2. Procedure for plugging a water leak.

Application

It is critical that all surfaces being treated with Alderprufe Tanking Slurry are clean and have been properly prepared. Always apply the mix to a pre-dampened surface. Porous substrates require more dampening than dense ones. Normal problems of damp and water ingress can be addressed by applying two coats of Alderprufe Tanking Slurry over the whole area.

The first coat should be brushed firmly onto the pre-dampened area using a medium hard, short bristle brush type. The nominal thickness of the first coat should be between 1 and 1.5mm.

The second coat may be applied as soon as the first coat has become “touch-dry”. In warm conditions, spray a fine mist of water over the surface of the first coat. Apply at right angles to the first coat to ensure complete coverage. This may be applied by trowel to give a dense smooth finish.

Ventilation and Curing

Uniform hardening and water tightness can be assured if the product is not allowed to dry out too rapidly, under moist conditions for at least three days. It is recommended that ventilation is provided as lack of it may cause small condensation beads to form on the surface of the Alderprufe Tanking Slurry. Protect the coating against excessively fast evaporation in hot conditions or drying winds. If these conditions prevail, mist spray the surface regularly.

Dehumidifiers should not be used immediately after the application of Alderprufe Tanking Slurry as this would arrest the curing system.

Plastering or Rendering

Remedial plaster systems may be used over the tanking slurry provided an intermediate bonding compound is employed. Dilute SBR latex with an equal volume of water and apply to the cured TS and allow to become tacky but not dry. Plaster may then be applied as normal. Where cement rendering is required, use an intermediate bonding slurry mixed at two parts sand:one part cement gauged with a 1:1 SBR:water mix. Apply the slurry to the tanking and apply the first render coat before the slurry dries.

A period of at least 6 months should be allowed before permanent decoration is considered. During this period use only permeable emulsion paints. Clean up and Spillages

Spillages should be cleaned up promptly. Non hardened material may be removed from surfaces or tools with water.

Health and Safety

Freshly mixed Alderprufe Tanking Slurry is alkaline. Always protect eyes and skin from contact using suitable gloves and eye protection.

Powdered products should be handled to minimise dust formation. A suitable mask must be worn when using in a confined area or if excessive dust is formed.

A full Material Safety Data Sheet is available on request.

Fig 1. Fig 2.

Internal treatment against negative water pressure using a fillet

Internal treatment against negative water pressure using a chase

Key:

water pressure

first coat tanking

second coat tanking

A B C D E

F G H I

Water leak

Chisel a groove along the line of the leak

Form a ‘drip’ using Super Plug to discharge the running water

Apply two coats of Alderprufe tanking Slurry to the wall

around the leak

Fill the hole around the tube using

Alderprufe Super Plug

Fix a temporary drain tube

Apply a surface coating of Alderprufe Tanking Slurry

Plug the hole using Alderprufe Super Plug

Cut drain tube at a point deeper

than the face of the wall

Compliance with Building Regulations and British Standards.

The relevant Building Regulations that apply to tanking systems for waterproofing are in: • Approved Document Part C2 Resistance to Moisture• Approved Document Basements for Dwellings.• Regulation 7, Materials and Workmanship• The British Standard is BS8102:2009 Code of

practice for protection of below ground structures against water from the ground

In addition, British Standard BS6920:2000 Suitability of non-metallic products for use in contact with water intended for human consumption gives test requirements for potable water contact.

Approved Document Part C2 Resistance to Moisture

The floors, walls and roof of the building shall adequately protect the building and people who use the building from harmful effects caused by:

• Ground moisture• Precipitation and wind-driven spray• Interstitial and surface condensation• Spillage of water from or associated with sanitary

fittings or fixed appliances.

A. Section 4.2: Floors next to the ground should:

• Resist the passage of ground moisture to the upper surface of the floor

• Not be damaged by moisture from the ground• Not be damaged by groundwater• Resist the passage of ground gases. Remedial

measures will include a gas resistant barrier.

Alderprufe Tanking Slurry used in a basement floor would protect against ground moisture.

B. Similarly Section 5.2: Walls states that walls should:

• Resist the passage of moisture from the ground to the inside of the building

• Not be damaged by moisture from the ground and not carry moisture from the ground to any part which would be damaged by it.

If the wall is an external wall, it should:

• Not be damaged by groundwater• Resist the passage of ground gases. Remedial

measures will include a gas resistant barrier.

Alderprufe Tanking Slurry used in walls protects buildings against ground moisture.

The other sections of Part C are not applicable to this type of product, since the majority of Approved Document C is aimed at new buildings. A more relevant Approved Document is Basements for Dwellings.

Approved Document “Basements for Dwellings”

Approved Document “Basements for Dwellings” forms part of the Building Regulations 2000. This publication supplements the basic level of guidance provided in each part of the Building Regulations, such as Part C, and provides guidance on the design and construction of basements for dwellings. It describes the means of meeting the relevant performance requirements of the Building Regulations.

Where resistance to moisture is concerned, this Approved Document is closely linked with BS8102:2009 Code of practice for protection of below ground structures against water from the ground.

A. Section 2.4 Exclusion of Moisture

Walls and floors below external ground level and the junctions between them should:

• Provide resistance to ground moisture reaching the internal surface of the wall or upper surface of the floor so that the environmental conditions within the basement are appropriate to the intended use.

• Not be damaged by moisture from the ground

BS8102:2009 gives 3 grades of waterproofing protection

Grade Example of use of structure Performance level

1Car parking, plant rooms (excluding electrical equipment), workshops

Some seepage and damp areas tolerable, dependent on the intended use.

2

Plant rooms and workshops requiring a drier environment (than Grade 1); storage areas

No water penetration acceptable.Damp areas tolerable, ventilation might be required.

3

Ventilated residential and commercial areas, including offices, restaurants, leisure centres etc.

No water penetration acceptable.Ventilation, dehumidification or air conditioning necessary appropriate to the intended use.

Table 1. Grades of waterproofing protection described in BS8102:2009 and Approved Document Basements for Dwellings

B. Selecting and Constructing a Waterproofing System

The Approved Document Basements for Dwellings provides an appendix (2A) with a flow chart containing the following steps:

• Determine the position of the water table• Determine the drainage characteristics of the soil• Determine whether the waterproofing system should

be made continuous or whether discontinuity may be acceptable

• Select an acceptable construction type• Determine type of foundation and its suitability for

providing continuity of waterproofing• Confirm that the selected foundation type and

waterproofing can achieve the required water resistance

• Assess the range of suitable primary waterproofing systems. Select and confirm the suitability of the waterproofing system

• Ensure adequate waterproofing details are provided for the system

The solution is likely to meet the requirements of the Building Regulations if:

• Each item has been considered and adequate account has been taken of the associated factors

• The waterproofing system meets the conditions of its Technical Approval where relevant

• The design proposals are in accordance with the suppliers’ recommendations

Step 1. Determine the position of the water table

Steps 2 and 3, Determine the drainage characteristics of the soil and hence the need for continuity of waterproofing

Table 2. Requirement for continuity of waterproofing

Tanking is a barrier method of waterproofing and is described as a Type A protection system, which can be used to give both continuous and discontinuous protection. Diagram 1 shows how Alderprufe Tanking Slurry can give continuous waterproofing when applied either internally or externally.

Diagram 3. Continuous waterproofing to basement with Alderprufe Tanking Slurry

Within Type A protection, cementitious crystallisation active systems are in category 6.

The suitability of cementitious tanking as a primary waterproofing system based on the position of the waterproofing system is shown in the table below:

Position of waterproofing system Type A

External Yes

Sandwich Yes

Internal Yes

Integral N/ATable 3. Suitability of tanking slurry depending on the position of the waterproofing system.

Pos

ition

of

wat

er ta

ble

D

rain

age

char

acte

ristic

s of

soi

l

C

an s

ite

be d

rain

ed

effe

ctiv

ely?

Req

uire

men

t fo

r wat

erpr

oof-

ing

in s

oils

w

ithou

t gas

es

Req

uire

men

t fo

r wat

erpr

oof-

ing

in s

oils

if

gase

s pr

esen

t

Low

Variable

High

Excellent

Good

Fair to Poor

Any

Yes

No

Discontinuity might be possible

Needs to be continuous

Needs to be continuous

How Alderprufe Tanking Slurry meets the requirements of the Building regulations

This section goes through the steps 1-9 listed overleaf, and shows where Alderprufe Tanking Slurry can (and can’t) satisfy the requirements of the Approved Document and BS 8102:2009.

External or internal waterproofing as appropriate

Basement structure

Note: Continuity of waterproofing should include details for junctions, changes in level, service penetrations etc.

required.

Step 7. Select suitable waterproofing system. Tanking slurry is an acceptable waterproofing system provided steps 1 - 6 are satisfied.

Step 8. Ensure adequate details are provided. Examples of details of the application of tanking slurry are given in diagrams 2 – 5.

Step 9. The solution is likely to meet the requirements of the regulations if:a. Each item has been considered and adequate

account has been taken of the associated factorsb. The waterproofing system meets the conditions of

its Technical Approval where relevantc. The design proposals are in accordance with the

suppliers’ recommendations

Diagram 5. Strip foundation without starter bars

Diagram 6. Strip or piled foundation with starter bars

Diagram 7. Reinforced masonry on concrete raft

Potential for lack of support to membrane

Basement

Internal waterproofing or External waterproofing

Type A Structure(a) Strip foundation without starter barsCan be suitable where continuity of waterproofing is not required.Due to possibility of movement, a ground supported slab should only be used where discontinuity is acceptable

Diagram 4 illustrates the different positions of waterproofing:

Diagram 4. External, sandwiched and internal waterproofing

Step 4 Select an acceptable construction typeThe acceptability of a Type A Barrier Protection with Alderprufe Tanking Slurry depends on the position of the water table as shown in Table 4.

Water Table

Waterproofing Plus drainage

Low Yes Yes

Variable

Maybe acceptable when variability is due to surface water or other infrequent occurrences and not due to an actual ride in the water table.

Maybe acceptable when variability is due to surface water or other infrequent occurrences and not due to an actual ride in the water table.

High Not recommended Not recommendedTable 4. Suitability of Type A Barrier Protection with Alderprufe Tanking Slurry according to

water table

Steps 5, 6 Determine proposed form of foundation, depending on whether continuity of waterproofing is

Difficult to achieve external waterproofing when reinforcement continues into wall

Basement

Pile foundation restricts full continuity to waterproofing with suspended slab

Type A Structure(c) Strip or pile foundation with starter bars

Simple raft foundation permits internal or external waterproofing

Reinforced masonry wall

Basement

Type A Structure(e) Reinforced masonry on concrete raft

Can be suitable where full continuity of waterproofing is required

External protection to be provided where required

Type A structure - tanked protection(water resistance reliant on

waterproofing)

External waterproofing

Sandwich waterproofing

Internal waterproofing

Basement

Basement

Basement

Loading coat - typically masonry leaf and screed

Approved Document to support Regulation 7

Regulation 7 requires that building work is carried out:a. With adequate and proper materials which:

i. Are appropriate for the circumstances in which they are used:

ii. Are adequately mixed or prepared, and:iii. Are applied, used or fixed so as adequately to perform

the functions for which they are designed, and:b. Are in a workmanlike manner

The suitability of a material for use can be assessed by several means, including:

• British Standards. The British Standard which applies to tanking is BS 8102:2009 Code of practice for protection of below ground structures against water from the ground. This is discussed below.

• Tests and calculations. The resistance to water pressure of Alderprufe Tanking Slurry has been measured by Elotex GmbH, Frankfurt according to BS EN 196: The treated concrete resisted positive water pressure up to 7 bars of pressure.

Compliance with standard BS 8102:2009 Code of practice for protection of below ground structures against water from the ground

BS8102:2009 is very similar in structure and content to Approved Document “Basements for Dwellings”.

Cementitious crystallisation barriers are described as Type A barrier protections, and details are in Section 8.2.6.

BS8102 gives the following guidelines concerning tanking barriers.

• Cementitious crystallisation barriers should be applied to either internal or external surfaces of the concrete structure by brush or spray. They are suitable for use on new and existing structures and do not require a loading coat.

• Horizontal Applications - cementitious crystallisation barriers can be applied as a single coat slurry to hardened concrete or dry sprinkle and trowel-applied fresh concrete. They can also be applied to concrete blinding immediately prior to the placing of overlaying concrete.

• Vertical Applications – the barrier should be applied in a two-coat application to all vertical surfaces.

Provided these guidelines are followed, then Alderprufe Tanking Slurry satisfies the requirements of BS8102:2009.

Waterproofing Membranes & Tanking Membranes

Liquid Applied Waterproofing

Protection Boards

Ground Drainage

LD10 Liquidised Waterproofer

LD10 is an effective high quality product made from pure refined bitumen and natural rubber latex. It is applied to the required surface by brush to form a heavy duty bitumen barrier with excellent elasticity - providing an effective all-in-one moisture and water vapour barrier. Its natural elasticity allows for small movement stresses caused by temperature changes in the building materials to which it is applied and its properties mean it can be successfully used on damp surfaces enabling work to proceed without interruption.

Alderprufe 20K

Alderprufe 20K is a self adhesive membrane which consists of a central polyethylene core coated on both sides with 1mm of self adhesive elastomer bitumen compound. The upper bitumen surface is protected by a thin polyethylene film, the lower bitumen surface is protected by a water resistant siliconised release sheet. It is recommended for use as a self adhesive waterproofing membrane for both vertical and horizontal work in tanking applications but can also be used as a waterproofing membrane on concrete decks, including roof garden systems.

Alderprufe AquaDrain System

The Alderprufe AquaDrain System combines structural waterproofing and drainage in one combined application offering improved waterproofing, protection and drainage capacity. The joint system works with Alderprufe 20K to isolate structures from all surrounding ground conditions without compromising on installation. Alderprufe 20K and Alderprufe AquaDrain are both technically advanced products designed to solve specific problems and are independently specified.

Alderprufe 15K

Alderprufe 15K is a self bonding vertical or horizontal damp proof membrane for tanking ground structures, subways and retaining walls. It consists of a self bonding polymer modified bitumen which is covered on one side by a tough two ply cross laminated high density polythene film and protected on the other side by a release sheet which is removed prior to the bonding of the material to a primed substrate. Once the release sheet has been removed the membrane can be easily applied by roller pressure.

Alderprufe 30K

Alderprufe 30K is a loose laid damp proof membrane intended for horizontal applications. It consists of a central polyester core coated on both sides with 1.5mm of modified bitumen which is in turn protected by a thin plastic film. It is generally welded to the substrate at the perimeter only. All overlaps are torch welded to provide an integral waterproof barrier. It is recommended for use in conjunction with other Alderprufe products in sub-ground tanklng applications and also for use in waterproofing floors, podiums, roof gardens and swimming pools.

Backerboard HD

Backerboard HD is a durable premoulded board used as a protection course for waterproofing materials against backfill for below ground walls and pressures formed by horizontal multi level slabs. Backerboard HD protects installed membranes from construction abuse and harmful puncture by rock and aggregate during backfilling operations and at the time of later settlement. It is economical and convenient to use in areas involving foundation walls and between slab construction such as parking garage decks, planter boxes, pools, kitchens, showers, plaza decks, roof terraces, tunnels and promenade decks.

Alderprufe Bentonite GCL

Geosynthetic Clay Liners are manufactured hydraulic barriers consisting of natural sodium bentonite and geotextiles. The uniform and direction independent shear stress transfer is created by needlepunching and then thermal locking all layers together. GCLs are used mainly as a replacement of thick, difficult to build, compacted clay liners.

LDERBURGHSolution Led Systems to ground borne problems

All products are manufactured to thehighest quality, being subject to rigid quality control. However, the company cannot control conditionsof application and use of its products, thus any warranty, written or implied, is given in good faith for materials only. Alderburgh Ltd will not accept any responsibility for damage or injury arising from storage, handling, misapplication or misuse of its products. All transactions are subject to our standard condition of sale, copies of which are available on request.

To find out more about these systems and products please contact us

Alderburgh LtdSladen Mill, Halifax Road, Littleborough,

Lancashire. OL15 0LB.

tel: 00 44 (0) 1706 374416fax: 00 44 (0) 1706 376785

email: sales@alderburgh.comhttp: www.alderburgh.com

E&OE. Without Guarantee.