TANALITH family

High Pressure Treated Timber SPECIFIER’S GUIDE

September 2013

Proven long term protection against decay and insect attack

for building , fencing, landscaping, garden and engineering

timbers.

• Protected by a unique, highly developed preservative formulation,

tanalItH e pressure treated timber gives a reliable and

consistent protection against fungal decay and insect attack.

• appealing natural pale green colour with excellent weathering properties.

• Usually specified for indoor and outdoor applications where there is a medium to high risk

of fungal decay and insect attack, eg. general construction, landscaping and leisure

timbers, fencing and other outdoor timber projects.

• available with a built-in water repellent (tanalItH extra) or colour additive (tanatone)

or a combination of water repellent and colour additive (tanalItH Creol).

tanalItH Creol treatment is applied throughout a two-part process; a high pressure tanalItH e treatment

followed by a dipping or low pressure treatment with Creol colourant.

FOr WATEr rEPELLENT TImBEr SPECIFY ‘WITH TANALITH ExTrA

WATEr rEPELLENT ADDITIvE’

Built-in water repellent provides enhanced weathering

protection and improved dimensional stability. Ideal for

cladding and decorative garden timbers.

FOr BrOWN COLOUrED TImBEr SPECIFY ‘WITH

TANATONE COLOUr ADDITIvE’

appealing built-in brown colour. Ideal for rough sawn

fencing and landscaping applications.

FOr DArK BrOWN COLOUrED AND WATEr rEPELLENT TImBEr

SPECIFY ‘WITH TANALITH CrEOL ADDITIvE’

Ideal for cladding, garden and leisure wood structures,

sleepers and fencing.

TO SPECIFY, the following wording is recommended . . . (UK only)

• The timber as detailed . . . (insert quantity, dimensions, species, whether sawn or round and its end use/description of component) . . .

is to be vacuum/pressure treated with TANALITH E preservative (state with TANALITH Extra water repellent, TANATONE colour additive

or TANALITH Creol additive, if desired) to comply with the Treatment Code . . . (insert “TE” Code from the chart opposite).

• Following treatment, any areas of treated timber revealed by cross cuts, holes, notches, shall be brushed with ENSELE end-grain

preservative.

• Timber which is rip sawn, equalised, planed or heavily sanded must be returned to the treatment plant for re-treatment.

• On no account are fence posts to be pointed after treatment. The shortening of posts and columns should be avoided.

In any event, cross cutting must be restricted to the top of the post or column.

• Specification clauses are available to download from the Lonza website - www.lonzawood.com

TANALITH E pressure treated timber

Internal building timbers Roof timbers (dry): pitched roofs, rafters, purlins, joists, sarking, wall plates.

Roof timbers (Hylotrupes areas): Where there is a risk of House Longhorn

Beetle (Hylotrupes bajulus L) according to the Building Regulations [5]

(applicable to England and Wales), the Building Standards Scotland [6] and

the Building Regulations (Northern Ireland) [7]: pitched roofs, rafters,

purlins, joists, sarking, wall plates.

Roof timbers (risk of wetting): Where components are exposed to risk of

wetting due to, for example, condensation: rafters, purlins, joists, sarking,

wall plates, flat roofs (cold), enclosed beams, valley gutter timbers, flat

roofs (warm inverted), exposed beams.

Tiling battens

External walls/ground floor joists. Timber frame material, external walls.

Sole plates.

ComPoNENT groUP ComPoNENT dETAILS

External building timbers

above dpc level

Cladding*, uncoated.

Cladding, soffits, fascias, barge boards subsequently protected with a

maintained and appropriate surface coating.

Cedar shingles.

Fencing and landscaping

timbers above ground contact

Rails, struts, gates, boards, slats, droppers, post caps, dowels, garden

decking boards, farm building, pergolas, gazebos and playground

equipment components above ground contact.

Fencing, landscaping and

farm buildings in ground

contact or fresh water contact

Posts (square sawn or cleft, sawn and dressed, machine turned, natural

rounds, half rounds), bearers, gravel boards, sleepers in ground contact.

Farm buildings: timbers embedded in ground or prone to frequent wetting.

Lock gates, revetments.

Packaging timbers in

cargoes to Australia

To comply with Australian Quarantine Regulations.

Highway fencing above ground To meet Highways Agency Specification Clause 311 or where a longer

service life is required than general Use Class 3 timbers.

Heavy duty industrial Highway fencing in ground contact: To meet Highways Agency

Specification Clause 311.

Packing timbers used in fresh water cooling towers.

Transmission poles.

Or where a longer service life is required than general Use Class 4 timbers.

All specifications refer to treatment of both softwoods and hardwoods, unless otherwiseindicated.

* Specify ‘with TANALITH Extra’ for water repellent timber, if desired.

§ Specify ‘with TANATONE’ for brown coloured timber, if desired.

∞ In accordance with EN 335: 2013 Use Class 3 can also be sub-classified as 3.1 and 3.2respectively.

† Classification in accordance with Australian Standards AS1604.

# Includes most common pines eg. Scots Pine (Redwood) and Corsican Pine but notincluding Maritime Pine.

• Always check suitability for treatment with the plywood supplier.

Plywood

BS EN 636 Exterior Grade (EN 314 Part 2 bonding class 3) or WBP (weather

and boil proof).

SPECIFICATIoNS ANd STANdArdS

TANALITH E preservative is tested in accordance with the requirements of

EN 599, including extended field trial testing. TANALITH E pressure treated timber

is treated in accordance with the penetration and retention requirements given in

BS 8417. Care should be taken when specifying timber species to ensure that

these can be treated in accordance with these penetration and retention

requirements. Use Classes are defined in EN 335.

TANALITH E pressure treated timber meets NBS (Z12), NHBC and WPA National

Specifications.

Lonza advises specifiers/users to ask for a confirmation of treatment from the

supplier as part of the specification/purchase process.

dESIrEd SErvICE LIFE

The desired service life does not provide a guarantee of performance but an

indication of the expectation against which the recommendations for timber

treatment are drawn up, assuming good design and normal conditions of use.

This list is not exhaustive. If your timber component

is not listed, please contact Lonza for further advice.

Proven performance against fungal decay and insect attack.

Specification chart for TANALITH E pressure treated timber

The best choice for general construction, landscaping

and leisure timbers, fencing and other outdoor timber projects.

1

1 or 2

2

2

2

2

USECLASS

3U∞

3C∞

3U∞

3U∞

4

3U†∞

3U∞

4

4

4

2•

3U•∞

60 years

60 years

TE/BI

TE/BI

dESIrEdSErvICE LIFE

60 years

60 years

60 years

30 years

15 years

(for 30 years - TE/MF)

15 years

Not

applicable

UK TrEATmENTCodE

TE/BI

TE/TB

TE/BI

60 yearsTE/BX

TE/gFb

30 yearsTE/BX

30 yearsTE/CS

TE/gFa*§

TE/gFb*§(softwood only)

TE/HW(hardwood only)

30 yearsTE/mF

30 yearsTE/Hd(softwood only)

TE/AQPermeable

softwood only#

60 yearsTE/EPa

15 yearsTE/EPb

Useful documentsThe TANALITH E Treated Timber User Guide

provides full details on the properties and

handling of TANALITH E, TANALITH Extra and

TANATONE pressure treated timber.

Cutting of TANALITH E, TANAToNE,TANALITH Extra and TANALITH Creoltreated timbersAny treated timber surface exposed by

cross-cutting, drilling, notching or boring must

be brushed with ENSELE end-grain

preservative to maintain the integrity of the

treatment. A choice of ENSELE product is

available for use with either green or brown

pressure treated timber. The ENSELE Technical

Data Sheet provides full information on this

product.

BS EN 636 Exterior Grade (EN 314 Part 2 bonding class 3) or WBP (weather

and boil proof). Humid Grade (bonding class 2) may also be suitable.

15 years(for 30 years - TE/HD)

4

Availability of treated timber/specific treatments

Ready treated stocks or specific treatments of tanalItH e, tanalItH extra, tanatone and tanalItH Creol

pressure treated timber are available through a network of timber companies and treaters throughout europe.

For details on your nearest supplier, please contact lonza at the address below or visit

www.tanalisedtimber.co.uk

1 2 3 4 5

timber loaded intotreatment vessel. Initialvacuum is applied andthe timber cells areevacuated of air.Vacuum held.

Cylinder flooded undervacuum with tanalItH ewood preservative, withcolour or water repellentadditives if required.

Hydraulic pressure isavailable, enabling thepreservative to penetrateinto the timber structure, toachieve a target penetrationfor the specified Use Class.

a final vacuum extractsexcess preservativesolution, which is thenpumped back intostorage.

low pressure inside thetimber draws in the surfacesolution when vented toatmosphere. treated timberis left to dry.

High pressure preservative treatment process

tanalItH e pressure treated timber is impregnated with tanalItH e preservative

under controlled conditions by vacuum high pressure technology in an enclosed

system.

High Pressure Treated Timber

Wheldon Road, Castleford, West Yorkshire, WF10 2Jt.

tel: +44 (0)1977 714000 Fax: +44 (0)1977 714001

e-Mail: timberprotectionadvice.ukca@lonza.com www.lonzawood.com

© Copyright 2013 lonza Wood Protection.

™ tanalith, tanatone and ensele are registered trademarks of arch timber

Protection, a lonza company.

lonza Wood Protection is a business of arch timber Protection, a lonza company.

Disclaimer: Whilst every attempt has been made to ensure the accuracy and

reliability of the information contained in this document, lonza Wood Protection

gives no undertaking to that effect and no responsibility can be accepted for

reliance on this information.

lonza Wood Protection updates its literature as and when necessary.

Please ensure you have an up to date copy.

Please note: tanalItH Creol treatment is applied through a two-part process; a high pressure tanalItH e treatment

followed by a dipping or low pressure treatment with Creol.

TANALITH family

VACSOL family

Low Pressure Treated Timber SPECIFIER’S GUIDE

September 2013

Proven long term protection against decay and insect attack

for general internal building timbers, timber frame material,

roof and floor components and external joinery.

SPECIALLY dEVELOPEd FOr ThE TrEATmEnT OF

I-STUdS/I-bEAmS In TImbEr FrAmE COnSTrUCTIOn.

VACSOL Aqualine has been specifically developed to

allow the use of I-Studs/I-Beams in external walls

where preservative protection is required to meet the

latest standards.

The in-line application system provides a fast, efficient

and effective method of protecting I-Studs/I-Beams.

• VACSOL Aqua treated timber is protected with

VACSOL Aqua waterbased preservative, containing

biodegradable fungicides.

• Proven performance against fungal decay and insect

attack.

• The appearance of the timber is virtually unchanged.

• For use in internal and external building applications above

dpc level where there is a low to medium risk of fungal

decay or insect attack - e.g. timber frame components,

external joinery, construction, roofing and flooring timbers.

VACSOL Aqua treated exterior woodwork should be

subsequently protected with a maintained and appropriate

surface coating.

TO SPECIFY, the following wording is recommended . . . (UK only)

• The timber as detailed . . . (insert quantity, dimensions, species and its end use/description of component)

. . . is to be vacuum/pressure treated with VACSOL Aqua preservative to comply with the Treatment Code . . . (insert “VA”

Code from the chart opposite).

• For the specification of VACSOL Aqualine contact Lonza Wood Protection directly.

• Following treatment, any areas of treated timber revealed by cross cuts, holes, notches, shall be brushed with VACSELE

end-grain preservative.

• Timber which is rip sawn, equalised, planed or heavily sanded must be returned to the treatment plant for re-treatment.

• Specification clauses are available to download from the Lonza website - www.lonzawood.com

VACSOL Aqua treated timber

Internal building timbers

COmPOnEnt grOUP COmPOnEnt dEtAiLS

External building timbers/

softwood external joinery

Softwood window frames & casings, soffits, barge and fascia boards,

cladding, doors.

Termite proofed

timberInternal timbers above dpc and termite shield and easily inspected.

Plywood#

§ Contact Lonza Wood Protection to confirm suitability of particularhardwoods for treatment, due to potential colour variation.

† Vacsol Aqua treated exterior woodwork should be subsequentlyprotected with a maintained and appropriate surface coating.

* In accordance with EN 335: 2013 Use Class 3 can also be sub-classified as 3.1and 3.2 respectively.

# Always check suitability for treatment with the plywood supplier.

Hardwood exterior joinery§ Hardwood window frames and casings, exterior doors and frames.

SPECifiCAtiOnS And StAndArdS

VACSOL Aqua preservative is tested in accordance with the requirements

of EN 599, including extended field trial testing. VACSOL Aqua treated

timber is treated in accordance with the penetration and retention

requirements given in BS 8417. Care should be taken when specifying

timber species to ensure that they can be treated in accordance with

these penetration and retention requirements. Use Classes are defined in

EN 335.

VACSOL Aqua treated timber meets NBS (Z12), NHBC and WPA National

Specifications.

Lonza advises specifiers/users to ask for a confirmation of treatment from

the supplier as part of the specification/purchase process.

dESirEd SErViCE LifE

The desired service life does not provide a guarantee of performance but

an indication of the expectation against which the recommendations for

timber treatment are drawn up, assuming good design and normal

conditions of use.

This list is not exhaustive. If your timber component is notlisted, please contact Lonza for further advice.

Proven performance against fungal decay and insect attack.

Specification chart for VACSOL Aqua treated timber

the best choice for timber frame components, external joinery,construction, roofing and flooring timbers.

1

1 or 2

2

2

2

2

2

USECLASS

3C†*

1 or 2

3C†*

dESirEdSErViCE LifE

UK trEAtmEntCOdE

VACSOL Aqua treated timber must only be used above

damp proof course level and not in ground contact.

Useful documentsThe VACSOL Aqua Treated Timber User Guide provides full details on

the properties and handling of VACSOL Aqua treated timber.

Cutting of VACSOL Aqua treated timbersAny treated timber surface exposed by cross-cutting, drilling, notching

or boring must be brushed with VACSELE end-grain preservative to

maintain the integrity of the treatment. The VACSELE Technical Data

Sheet provides full information on this product.

3C†* External timbers above dpc and termite shield and easily inspected.

1 or 2

3C†*

EN 636 Humid Grade (BS EN 314 Part 2 bonding class 2).

EN 636 Exterior Grade (BS EN 314 Part 2 bonding class 3) orWBP (weather and boil proof).

60 years

60 years

VA1

30 yearsVA3

30 yearsVA5

60 yearsVA2

30 years

60 yearsVA3

VA1

60 yearsVA1

60 yearsVA1

60 yearsVA3

60 yearsVA1

VA2

VA3 30 years

VAL 60 years

Roof timbers (dry): pitched roofs, rafters, purlins, joists, sarking,

wall plates.

Roof timbers (Hylotrupes areas): Where there is a risk of House Longhorn

Beetle (Hylotrupes bajulus L) according to the Building Regulations [5]

(applicable to England and Wales), the Building Standards Scotland [6]

and the Building Regulations (Northern Ireland) [7]: pitched roofs, rafters,

purlins, joists, sarking, wall plates.

Roof timbers (risk of wetting): Where components are exposed to risk of

wetting due to, for example, condensation: rafters, purlins, joists, sarking,

wall plates, flat roofs (cold), enclosed beams, valley gutter timbers, flat

roofs (warm inverted), exposed beams.

Tiling battens.

Sole plates.

Timber frame material: external walls/ground floor joists.

Specific treatment for I-Studs and I-Beams.

Effective long-term protection against fungal and insect attack.designed for use in internal and

external building applications above dpc level.

Availability of treated timber/specific treatments

VACSOL Aqua and VACSOL Aqualine treated timber requirements are usually processed to order.

Specific treatments are available through a wide network of timber companies and treaters throughout Europe.

For details on your nearest supplier, please contact Lonza at the address below.

VACSOL Aqualine treatment for I-Studs/I-Beams involves an in-line, vacuumatic coating system.

Low pressure preservative treatment process

VACSOL Aqua treated timber is impregnated with VACSOL Aqua timberpreservative under controlled conditions by double vacuum/low pressure(VAC-VAC) technology in an enclosed system.

1 2 3 4

Vacuum created and timber

cells evacuated of air.

Vessel flooded under vacuum.

The vacuum release enables the

VACSOL Aqua preservative to

penetrate into the timber cells

under atmospheric pressure, in

order to achieve a target

penetration for the specified

Use Class.

A second vacuum is applied to

evacuate the timber cells of

excess preservative. Timber

surface wet.

Venting of atmospheric

pressure (second or ‘double’

vacuum) drives any surface

preservative back into the

timber cells. Timber surface

drip dry.

Low Pressure Treated Timber

Wheldon Road, Castleford, West Yorkshire, WF10 2JT.

Tel: +44 (0)1977 714000 Fax: +44 (0)1977 714001

E-Mail: timberprotectionadvice.ukca@lonza.com www.lonzawood.com

© Copyright 2013 Lonza Wood Protection.

™ Vacsol, Vac-Vac and Vacsele are registered trademarks of Arch Timber

Protection, a Lonza company.

Lonza Wood Protection is a business of Arch Timber Protection, a Lonza company.

Disclaimer: Whilst every attempt has been made to ensure the accuracy and

reliability of the information contained in this document, Lonza Wood Protection

gives no undertaking to that effect and no responsibility can be accepted for

reliance on this information.

Lonza Wood Protection updates its literature as and when necessary.

Please ensure you have an up to date copy.

VACSOL family

TANALITH E pressure treated timber is timber which has been impregnated with TANALITH E woodpreservative under controlled conditions in a vacuum pressure timber impregnation plant.

TANALITH E is a water based wood preservative that contains copper and proven organic biocides. Whenimpregnated into the timber the preservative components bond with the wood structure and cannot easilybe removed.

TANALITH E pressure treated timber has a long term protection against fungal and insect attack, includingtermites, for both in and out of ground contact, interior and exterior applications when treated to the correctend use specification.

TANALITH E pressure treated timber has an initial natural green colouration. Upon external exposure, thegreen colour slowly weathers to a warm, honey brown and in the longer term becomes a natural silver grey.This weathering process does not indicate any loss of preservative protection.

TANALITH E pressure treated timber is also available with built-in water repellent (TANALITH Extra) or built-in brown colour (TANATONE). With the benefit of water repellent properties, TANALITH Extra pressuretreated timber is ideal for outdoor leisure and decorative timbers such as decking, cladding and playgroundequipment. TANATONE treated timber has a brown colouration as opposed to the traditional TANALITHgreen. It is ideal for rough sawn timber fencing and landscaping applications.

Recommendations provided for TANALITH E pressure treated timber apply equally to TANALITH Extra andTANATONE pressure treated timber, unless otherwise stated.

Treated Timber USER GUIDE

Tanalith E, Tanalith Extra & Tanatone Treated Timbers

Issued May 2014

TANALITH E Wood PreservativesTANALITH E wood preservatives are approved for use by the relevantregulatory authorities in the markets it is used. The biocides contained inTANALITH E wood preservatives are being supported under the BiocidalProducts Regulation.

Treatment SpecificationsTANALITH E treatment process parameters can be varied, taking intoaccount timber species, desired service life and to match the end use (UseClass) of the timber. It is therefore extremely important that the end useand species of the timber are clearly stated within the treatmentspecification. Use Classes are defined in EN 335:2013 but can besummarised as follows:

• Use Class 1 - internal building timbers - no risk of wetting.

• Use Class 2 - internal building timbers - risk of wetting.

• Use Class 3 coated - external timbers used above ground contact andcoated.

• Use Class 3 uncoated - external timbers used above ground contact anduncoated.

• Use Class 4 - external timbers used in ground or fresh water contact.

In accordance with EN 335:2013 Use Class 3 can also be sub-classified as3.1 and 3.2 respectively. The interpretation of these sub-classes may varyfrom country to country.

TANALITH E pressure treated timbers can be produced for any above UseClasses. The specific end use suitability of ready treated TANALITH Etimbers should be confirmed by the supplier of the treated timber.

Treated Timber USER GUIDE

Tanalith E, Tanalith Extra & Tanatone Treated Timbers

Treated Timber AppearanceColour variations of TANALITH E treated timber may occur due to thenatural variability of the relative proportions of heartwood and sapwoodand darkening of some hardwoods may occur. Upon external exposure, theinitial green colour of TANALITH E treated timber slowly weathers to awarm, honey brown and in the longer term becomes a natural silver grey.This weathering process does not indicate any loss of preservativeprotection.

If required, the green colour of TANALITH E treated timber can berefreshed at any stage using coating products such as RESTOL Wood Oil,available in Garden Timber Green. Always follow the coatingmanufacturer’s instructions in these situations. For more information onRESTOL Wood Oil visit www.restol.info

TANATONE pressure treated timber with built-in colour has a brownappearance. TANATONE will not hide or mask wood grain nor will it totallymask discolouration caused by weathering or dirt, fungal staining or wooddefects. In addition, some resinous softwoods, eg redwood, may exhibitresin flecking or resin bloom around knots if treated when the timber isstill fresh/unseasoned. This can occur with both TANATONE andTANALITH E pressure treated timber, but may be accentuated byTANATONE.

As with all colour applications to timber, the brown colour of TANATONEtreatment will fade with time. If required, the colour can be refreshed witha brush-on colour product such as RESTOL Wood Oil.

Enhanced protection against the weather can be obtained by usingTANALITH Extra pressure treated timber with built-in water repellent.Brush applied water repellent coatings, such as RESTOL Wood Oil can alsobe used. These are particularly effective when applied as a regularmaintenance product to the surface of TANALITH Extra pressure treatedtimber.

Note that timber is a variable and natural product. Occasionally timbercontaining high or mobile resin levels can give a blue colouration at thepoint of treatment. Upon weathering this fades rapidly into the overallcolouration of the treated timber.

Post-Treatment MachiningAs far as possible all cutting, machining, notching and boring is to becarried out prior to treatment.

Where cutting, machining, notching and boring has to be carried out totreated timber, the area of timber revealed by the cross cuts, holes ornotches must be liberally brushed with a suitable end grain preservative inaccordance with the manufacturer’s instructions to maintain the integrityof the preservative protection.

Pieces which are rip sawn, thicknessed, equalised or planed must bereturned to the supplier of the treated timber for re-treatment.

On no account are fence posts to be pointed after treatment. Theshortening of posts and columns should be avoided if possible, but in anyevent cross cutting must be restricted to the top of the post or column andthe cross cut surface must liberally brushed with a suitable end grainpreservative in accordance with instructions on the product label.

For more information on end grain preservatives contact the Lonza WoodProtection Advisory Service.

GluingTANALITH E pressure treated timber dried to less than 20% moisturecontent and in equilibrium or within 5% of its expected in-service moisturecontent, may be glued with most commonly available adhesives.

TANALITH E pressure treated timber may be glued after cleaning off anysurface deposits or dirt with a wire brush, or after a light sanding.

In consultation with the adhesive manufacturer, select an adhesiveappropriate to the in-service exposure condition and appropriate for loadbearing or non-load bearing requirements. Consult the glue manufactureron the suitability and use of their particular product and follow thedirections of the appropriate regional standards.

For load bearing constructions, phenol resorcinol formaldehyde, resorcinolformaldehyde, phenol formaldehyde, melamine urea formaldehyde,melamine formaldehyde, urea formaldehyde, emulsion polymer isocyanateglues are generally used.

For non-load bearing constructions, emulsion polymer isocyanate,polyurethane, polyvinyl acetate, urea formaldehyde, melamine ureaformaldehyde, melamine formaldehyde and phenol resorcinolformaldehyde glues are generally used.

For exterior or damp conditions, phenol resorcinol formaldehyde, resorcinolformaldehyde or phenol formaldehyde glues are generally used.

For internal dry conditions, resorcinol formaldehyde, phenol formaldehyde,melamine urea formaldehyde casein, polyvinyl acetate, ureaformaldehyde, emulsion polymer isocyanate glues are generally used.

Surface CoatingsTANALITH E pressure treated timber does not have to be painted orstained to maintain its preservative properties.

Many coating products are available on the market. Always consult thecoating manufacturer’s recommendations before applying a coatingproduct to TANALITH E pressure treated timber.

If TANALITH E pressure treated timber is to be painted, stained orvarnished, the timber should be dried throughout the cross section. Alwaysfollow the coating manufacturer’s instructions, taking note of therecommended maximum moisture content prior to application.

The preservative treatment is not a substitute for sealing of knots, basecoating or priming.

If waterbased coatings are applied, some discolouration may occur inexceptional circumstances. If this happens, allow the coating to drycompletely. Then apply an additional coat of product, preferably one with ahigh build, high solids content. It is NOT recommended to apply opaquepaint systems to TANATONE pressure treated timber.

Metal Fixings & FittingsGeneral AdviceIt is important to follow the recommendations of the manufacturer of anymetal products used for specific advice regarding suitability, desiredservice life expectations and particular exposure conditions.

TANALITH E pressure treated timber has a long life expectancy and it isappropriate to use metal fixings and fastenings that will have acomparable length of life.

• Performance of metal fixings is influenced by the environmentalconditions including moisture content, temperature, atmosphericpollution, proximity to coastal locations, timber species, as well as thethickness of any galvanising.

• For exterior use, where the timber is likely to become wet and a longservice life is required, greater corrosion resistance will be achievedwith use of austenitic grade 316 stainless steel, silicone bronze orcopper in preference to other types of fittings.

• Galvanising provides a sacrificial zinc barrier. It is important that thespecifier/end user is aware that there are many thicknesses ofgalvanised coating available and the thicker the galvanised coating thelonger the expected service life. The level of galvanising should becommensurate with the end use. The use of an automated nail gun maybreak the galvanised layer in lower grade metal fixings and compromisetheir performance at the outset.

• Electroplated metals only provide a thin coating and are unsuitable forexterior applications.

• It is good practice to drill pilot holes for fixings, in particular whenscrewing near the edge or end of a piece of timber.

• Attach connectors, fasteners and fittings after preservative treatmentand only after the timber has re-dried to less than 20% moisturecontent.

• In addition to the above, for internal building timbers, e.g. trussedrafters, it is recommended to re-dry the timber to a moisture content of22% or less before assembly and to maintain the timber in thiscondition during storage and delivery to site.

• To prevent bimetallic corrosion between fastener and connectorcomponents it is important not to mix metals in the same connection.DO NOT mix galvanised and stainless steel components.

• Refer to local guidelines for slating and tiling. Nails for use with slatesshould be of copper, phosphor or silicon bronze. Nails for use with tilesshould be austenitic stainless steel, copper, phosphor or silicon bronze.The use of aluminium and galvanised steel nails is NOT recommended.

• Eurocode 5 (EN 1995-1-1: 2004) gives minimum specifications formaterial protection against corrosion for fasteners and fixings used ininternal building, low hazard situations (Use Classes 1 and 2) where themoisture content of the treated timber will not exceed 20% throughoutits service life.

• Direct contact with aluminium should be avoided where the moisturecontent will exceed 18% or where condensation is possible.

• Where the use of aluminium is unavoidable in situations wheremoisture content will exceed 18%, it must be separated from the timberusing a bituminous, epoxy or other impervious barrier or electricallyinsulating coating. The use of nylon/plastic washers is recommended.

• Fixings and fastenings used on safety critical and load bearingcomponents should be inspected regularly and replaced if necessary.

• Specialist advice should be obtained in the selection of connectors foruse in swimming pool buildings. Detailed advice is contained in theNickel Development Institute document Stainless Steel in SwimmingPool Buildings 1995.

Typical ApplicationsIt is advisable to consult with Lonza Wood Protection using the contactdetails given in this document if in doubt about any particular area ofapplication or compliance with other relevant standards or specifications.

This list below, which is not totally exhaustive, gives an indication of therange of timbers and timber based products which can be treated withTANALITH E wood preservative. The treatment process parameters arevaried to match the end use of the timber and its species. It is thereforeextremely important that you make sure that the timber has been treatedto the correct specification. The use of TANALITH Extra water repellenttreated timber may be advisable for certain end use applications, such asdecking, cladding and playground equipment.

BuildingStructural elements and general timbers in domestic, commercial andpublic buildings, such as wall frames, sole plates, beams, joists, subfloors,roof timbers, external joinery, battens, cladding, roof shingles.

Garden & LandscapingDecking systems, pergolas, gazebos, bridges, summer houses, soilretaining walls, timbers around fish ponds (but not in direct contact withthe water), playground equipment, lawn edging, fencing, picnic benchesand tables, way signs and litter bins. For certain applications,particularlywith thin cladding type timbers, it may be appropriate to use a brush-onwater repellent or TANALITH Extra treated timber which has a built-inwater repellent.

Agricultural & HorticulturalEarth retaining vegetable beds (use of pressure treated timber does notaffect organic status), fruit tree stakes, hop poles, vine stakes

Enclosures/FencingNatural round, machine turned and square sawn fence posts, rails,droppers, gates and gate posts, stiles and highway, farm and securityfencing

TransportFloors and other timbers for railway and road vehicles, container floorsand linings, packing cases, cable drums and hatch covers. For treatmentsto meet Australian Quarantine Regulations (AQIS) contact Lonza WoodProtection directly for the latest information.

EngineeringTransmission poles, decking, shells, gantries, bridges and bridge decks,handrails, cable ducting and sound barriers.

End Use ConsiderationsTANALITH E pressure treated timber can be used in internal and externalbuilding applications and outdoors, both in ground contact and above theground, without any need for further protection.

TANALITH E pressure treated timber is treated to meet the requirementsof a particular end use.

When using timber for exterior situations, either treated or untreated,consideration should be given to the propensity of the material to stainlight coloured adjacent faces, such as render, paving flags or coated timbersurfaces, with its natural extractives during the weathering process. Thisstaining effect can be highlighted where TANATONE treated timber hasbeen selected, although the potential for this to occur does reduce with time.

Treated Timber USER GUIDE

Tanalith E, Tanalith Extra & Tanatone Treated Timbers

Where used in this external environment, it is highly recommended thatcontact between the timber and these surfaces is eliminated by design, inorder to prevent surface discolouration.

Where close tolerance work is involved it is advisable to pre-machine thetimber at the in-service equilibrium moisture content prior to treatment.Consultation with the treatment supplier is advised in these situations.

When used in construction applications it is always best practice forpreservative treated timbers to be dried down to the in-service moisturecontent prior to fabrication.

Treated timber should not be used where it may come into contact withdrinking water or for food preparation surfaces/structures or containers forstorage.

When considering the use of TANALITH E pressure treated timber aroundfishponds, please contact Lonza Wood Protection for advice.

If supplying timber for treatment it is best practice to prepare the timberas fully as possible prior to treatment to ensure best results.

If any cutting, notching or drilling is made to the treated timber followingtreatment, any exposed surfaces should be liberally swabbed with anappropriate end grain preservative to maintain the integrity of thetreatment.

Handling PrecautionsYou should have received the treated timber in a drip-free condition withno sign of preservative fluid on the surface. If this is not the case, thetimber should be stored open stacked under ventilated conditions andprotected from rain and snow to dry before use.

When working with timber, wear gloves to protect the skin againstabrasions and splinters. Any cuts and abrasions should be protected by awaterproof dressing.

When power-sawing and machining, wear goggles to protect the eyesfrom flying particles. Wear a dust mask and, whenever possible, performthese operations outdoors to avoid accumulations of airborne sawdust oruse a suitable dust extraction system around any mechanical saw orplaning machine. Avoid frequent or prolonged inhalation of sawdust.Consult local regulatory authorities for further information on workplaceexposure limits for wood dust.

In order to prevent injury, care should be taken when lifting or movingtimber. These handling precautions equally apply to untreated and treatedtimber.

Personal HygieneAfter handling or working with treated timber, all exposed skin should bewashed before commencing other activities, especially eating, drinking,smoking or going to the toilet.

If sawdust accumulates on clothes, clean them before re-use.

Launder heavily soiled clothes separately from other household washitems.

On-Site PrecautionsAll sawdust and construction debris should be cleaned up and disposedfollowing local regulations.

Waste DisposalTANALITH E pressure treated timber is not classified as hazardous waste.Local market regulations should be referred to.

TANALITH E treated timber and post treatment processing wastes, such assawdust and offcuts, must not be used for animal litter or bedding or forfuel in barbecues, cooking stoves or grates.

Domestic end users should dispose of any waste treated timber, sawdustor ash through the ordinary waste collection service or at a local authorityamenity/disposal site.

Any waste timber, sawdust or redundant timber from commercial orindustrial use (e.g. construction sites) should preferably be recycled by re-use, or disposed of to an authorised landfill or to a correctly controlled andapproved waste incinerator.

Further InformationFor further information with respect toTANALITH E, TANALITH Extra,TANATONE treated timbers, end grain preservatives or RESTOL Wood Oilplease contact Lonza Wood Protection using the contact details below.

Use biocides safely. Always read the label and product information before use.

Treated Timber USER GUIDE

Tanalith E, Tanalith Extra & Tanatone Treated Timbers

Wheldon Road, Castleford, West Yorkshire,WF10 2JT.Tel: +44 (0)1977 714000 Fax: +44 (0)1977 714001

email: timberprotectionadvice.ukca@lonza.com www.lonzawood.com

© Copyright 2014 Lonza Wood Protection.

® Tanalith, Tanatone and Restol are registered trademarks of Arch Timber Protection, a Lonza company.

Lonza Wood Protection is a business of Arch Timber Protection, a Lonza company.

Disclaimer: Whilst every attempt has been made to ensure the accuracy and reliability ofthe information contained in this document, Lonza Wood Protection gives no undertakingto that effect and no responsibility can be accepted for reliance on this information.

Lonza Wood Protection updates its literature as and when necessary. Please ensure youhave an up to date copy.

VACSOL Aqua treated timber is timber which has been impregnated with VACSOL Aqua wood preservativeunder controlled conditions in a double vacuum, low pressure timber impregnation plant (VAC-VAC plant).

VACSOL Aqua is a waterbased wood preservative that contains organic active ingredients (triazolefungicides and an insecticide).

VACSOL Aqua treated timber gives long term protection against fungal and insect attack, for both interiorand exterior (above ground contact) construction timber and joinery applications.

VACSOL Aqua treated timber must only be used above the damp proof course level and/or above groundcontact. Exterior joinery/woodwork must be subsequently protected with an appropriate and maintainedsurface coating. In termite areas, VACSOL Aqua treated timber should be used above the termite shield.

The appearance of VACSOL Aqua treated timber following treatment is virtually unchanged. However, acolourant is often included to facilitate identification of treatment.

Treated Timber USER GUIDE

Vacsol AquaTreated Timbers

Issued May 2014

Vacsol Aqua Wood PreservativeVACSOL Aqua wood preservatives are approved for use by the relevantregulatory authorities in the markets they are used. The biocidescontained in VACSOL Aqua wood preservatives are being supportedunder the Biocidal Products Regulation.

Treatment SpecificationsVACSOL Aqua treatment process parameters can be varied, taking intoaccount timber species, desired service life and to match the end use(Use Class) of the timber. It is therefore extremely important that theend use and species of the timber are clearly stated within thetreatment specification. Use Classes are defined in BS EN 335 2013 butcan be summarised as follows:

• Use Class 1 - internal building timbers - no risk of wetting.

• Use Class 2 - internal building timbers - risk of wetting.

• Use Class 3 coated - external timbers used above ground contactand coated.

In accordance with EN 335:2013 Use Class 3 can also be sub-classifiedas 3.1 and 3.2 respectively. The interpretation of these sub-classes mayvary from country to country.

VACSOL Aqua treated timbers can be produced to meet therequirements of Use Classes 1, 2 and 3 coated.

Treated Timber AppearanceAfter the application of VACSOL Aqua wood preservative by the VAC-VAC process, the appearance of the timber is virtually unchanged.However, a colourant is often included to facilitate identification oftreatment.

Experience has shown to date that there is no particular problem withgrain raising. However, as with all water based products, there ispotential for this to take place.

Colour variations may occur due to the natural variability of the relativeproportions of heartwood and sapwood and darkening of somehardwoods may occur.

Trials should be carried out on decorative timber species (particularlyhardwood species) to check any shade changes prior to treatment of thefull commercial batch. Further information can be obtained from theLonza Wood Protection Advisory Service.

Post-Treatment Storage and Collection of Treated TimberWhen received, VACSOL Aqua treated timber should be free fromsurface liquid. Drying will be accelerated when stored in a well-ventilated, weather protected area.

Impregnation of timber with VACSOL Aqua imparts a low moistureuptake. This may cause slight swelling across the end grain surfaces.

If this occurs treated material should be stored, open stacked, to providesufficient ventilation for moisture to evaporate. The timber will re-dry toits original dimensions when placed in the same temperature andhumidity conditions in which it was machined and profiled prior totreatment.

Flat items such as sheets of plywood should be separated and eitherstickered horizontally or stacked more or less vertically, with air spacebetween them to promote drying.

Building components stored on a building site should be clear of theground and stacked and protected so that they are not distorted orsaturated by rainwater.

Trussed rafters should be stored on-site and out of ground contact. If thestorage time exceeds two weeks recommendations of regional standardsand associations should be followed.

Post-Treatment MachiningAs far as possible all cutting, machining, notching and boring is to becarried out prior to treatment.

Some cross-cutting on-site is unavoidable. This will expose an untreatedcore and it is imperative that cross-cuts, notches and bored holes beliberally swabbed with an approved end grain preservative to maintainthe integrity of the preservative protection.

Rip sawing, grooving, planing and heavy sanding are not permitted unlessthe timber is returned for re-treatment to maintain the integrity of thepreservative protection.

GluingVACSOL Aqua treated timber may be bonded with a range of adhesives,including the following:

• Resorcinol Formaldehyde or Phenol Formaldehyde

• Urea Formaldehyde

• PVA emulsion

When bonding preservative treated timber, care should be taken toprepare the surfaces prior to application of the adhesive.

The glue manufacturer's instructions should be followed at all times.

Where impact adhesives are to be used or highly stressed glue joints areto be made (e.g. 'Glulam' beams) using VACSOL Aqua treated timber,advice should be sought from the Lonza Wood Protection AdvisoryService.

Putties, Mastics & SealantsReference should be made to regional standards and codes of practice forsuitable materials for glazing.

The choice of putties, mastics and sealants is dictated by thecharacteristics of the primer/basecoat used. It is not influenced by thefact that the timber has been VACSOL Aqua treated.

Where any doubt exists advice should be sought from the manufacturerof the putty, mastic or sealant in the first instance and then from LonzaWood Protection.

Surface CoatingsOver absorbent timber may adversely affect decoration. Care should betaken to ensure adequate drying of timbers suspected of over absorbencyor thin timbers, e.g. cladding and beading, before any surface coating isapplied.

Many coating products are available on the market and whilst LonzaWood Protection has tested a broad range of these for compatibility withVACSOL Aqua treated timber it is not possible to test all of them. Alwaysconsult the coating manufacturer’s recommendations before applying acoating product to VACSOL Aqua treated timber.

The following notes apply to common painting practice.

Solvent Based Decorative CoatingsVACSOL Aqua treated timber• Freshly treated VACSOL Aqua timber should be allowed to dry for 48

hours, open-stacked in an undercover, well-ventilated area, prior toapplication of primer or basecoat (see section on over absorbency).

• Where acrylic primers are to be used, it is advisable to carry out asimple test to establish compatibility.

• When using aluminium leafing primer, longer periods of drying may benecessary after VACSOL Aqua treatment due to the sealingcharacteristics of this type of coating.

• A further 7 days should elapse before the final paint or stain finishesare applied, allowing normal drying time before applying each coat.

VACSOL Aqua treated plywoodThe time allowed between treatment and priming depends upon dryingconditions, the types and thickness of plywood used and the amount ofpreservative absorbed during treatment. Before applying a basecoat, it isrecommended that at least 72 hours be allowed from the time that thesheets of treated plywood are separated for drying under favourableconditions, and that a further 7 days elapse before final paint/stains areapplied.

Water Based Decorative CoatingsVACSOL Aqua treated timber• Freshly treated VACSOL Aqua timber should be allowed to dry for 48

hours, open-stacked in a well ventilated area, prior to application of aprimer or basecoat. A further 7 days should elapse before the finalpaint or stain finishes are applied, allowing normal drying time beforeapplying each coat.

VACSOL Aqua treated plywood• The time allowed between treatment and priming depends upon drying

conditions, the types and thickness of plywood used and the amount ofpreservative absorbed during treatment. Before applying a basecoat, itis recommended that at least 72 hours be allowed from the time thatthe sheets of treated plywood are separated for drying underfavourable conditions and that a further 7 days elapse before finalpaint/stains are applied.

Treated Timber USER GUIDE

Vacsol Aqua Treated Timbers

Metal Fixings & FittingsGeneral AdviceIt is important to follow the recommendations of the manufacturer of anymetal products used for specific advice regarding suitability, desiredservice life expectations and particular exposure conditions.

VACSOL Aqua treated timber has a long life expectancy and it isappropriate to use metal fixings and fastenings that will have acomparable length of life.

• VACSOL Aqua treatment has no corrosive effect on mild steel fittingsand fixtures. The timber must be at a moisture content below 20%before mild steel fixings and fittings are applied and must remain below20% in service.

• Where higher moisture contents (above 20%) are expected in service,galvanised steel, stainless steel, copper, aluminium or brass fixings andfittings should be used. At least 24 hours should elapse after treatmentbefore these fixings are applied.

• For trussed rafter manufacture, fixings and fittings recommendations ofregional standards and associations should be followed.

• Zinc sheeting can be applied to VACSOL Aqua treated timber so long asthe timber is completely dried - less than 28% moisture content.

Floor Coverings and Plasterboard/Absorbent Composite Board MaterialsWhere VACSOL Aqua treated timber is to be in contact with floorcoverings, plasterboard or other absorbent material, care should be takento ensure adequate moisture evaporation has taken place prior to fixing,otherwise the substrate may absorb excess VACSOL Aqua solution (seesection on over absorbency).

If necessary, the moisture content of the timber should be checked.However it should be noted that moisture meters may be affected bypreservative treatment. Moisture meters with insulated probes shouldtherefore be used.

Typical ApplicationsIf in doubt about any particular area of application or compliance withother relevant standards or specifications, it is advisable to consult withLonza Wood Protection using the contact details given in this document.

This list, which is not totally exhaustive, gives an indication of the range oftimbers and timber based products which can be treated with VACSOLAqua wood preservative. The treatment process parameters are varied tomatch the end use of the timber and its species. It is therefore extremelyimportant that you make sure that the timber has been treated to thecorrect specification.

Hardwood Exterior JoineryHardwood window frames and casings, exterior doors and frames.

PlywoodsUnder previous systems WBP (weather and boil-proof) grade plywood wasclassified under a British Standard which has now been withdrawn.

Plywood grades are based on EN 636 (Dry, Humid and Exteriorclassifications), which themselves are based on bonding classes 1, 2 and 3from EN 314 Part 2. Plywood that is either WBP or EN 636 Exterior grade(EN 314 Part 2 bonding class 3) should now be specified. Humid grade (bonding class 2) might be acceptable, but the board

manufacturer or supplier should be asked to confirm that Humid gradeboard can be put through a double vacuum (VAC-VAC) treatment process.

Internal and External Building TimbersStructural elements and general timbers in domestic, commercial andpublic buildings, such as wall frames, sole plates, beams, joists, sub-floors, roof timbers, battens, cladding, roof shingles.

When used in construction applications it is always best practice forpreservative treated timbers to be dried down to the in-service moisturecontent prior to fabrication.

Softwood External JoinerySoftwood window frames and casings, soffits, barge and fascia boards,cladding, load bearing joinery and doors.

MisuseDO NOT Use VACSOL Aqua Treated Timber in the FollowingSituations:1. Below dpc and/or in ground contact.2. In termite areas below the termite shield.3. In direct contact with foodstuffs.4. In an exterior situation without a protective coating.

Over AbsorbancyOccasionally, a parcel of timber will contain some pieces which have anabnormally permeable sapwood. Such pieces should be placed on one sidefor prolonged drying before overpainting/staining or the fixing of porousmaterials which may absorb the excess solution and adversely affectsubsequent decoration.

Handling PrecautionsYou should have received the treated timber in a drip-free condition withno sign of preservative fluid on the surface. If this is not the case, thetimber should be stored open stacked under ventilated conditions andprotected from rain and snow to dry before use.

When working with timber, wear gloves to protect the skin againstabrasions and splinters. Any cuts and abrasions should be protected by awaterproof dressing.

When power-sawing and machining, wear goggles to protect the eyesfrom flying particles. Wear a dust mask and, whenever possible, performthese operations outdoors to avoid accumulations of airborne sawdust oruse a suitable dust extraction system around any mechanical saw orplaning machine. Avoid frequent or prolonged inhalation of sawdust.Consult local regulatory authorities for further information on workplaceexposure limits for wood dust.

In order to prevent injury, care should be taken when lifting or movingtimber. These handling precautions equally apply to untreated and treatedtimber.

Personal HygieneAfter handling or working with treated timber, all exposed skin should bewashed before commencing other activities, especially eating, drinking,smoking or going to the toilet.

If sawdust accumulates on clothes, clean them before reuse.

Launder heavily soiled clothes separately from other household washitems.

Treated Timber USER GUIDE

Vacsol Aqua Treated Timbers

On-Site PrecautionsAll sawdust and construction debris should be cleaned up and disposed ofafter construction.

Waste DisposalVACSOL Aqua treated timber is classified as hazardous waste.

Post treatment processing wastes, such as sawdust and off-cuts, must notbe used for animal litter or bedding.

VACSOL Aqua treated wood should not be used for fuel in barbecues,cooking stoves or grates.

Any waste timber, sawdust or redundant timber from commercial orindustrial use (e.g. construction sites) should preferably be recycled by re-use, or disposed of to an authorised landfill or to a correctly controlled andapproved waste incinerator.

Further InformationFor further information on VACSOL Aqua treated timbers or end grainpreservatives please contact Lonza Wood Protection using the contactdetails below.

Treated Timber USER GUIDE

Vacsol Aqua Treated Timbers

Wheldon Road, Castleford, West Yorkshire, WF10 2JT.Tel: +44 (0)1977 714000 Fax: +44 (0)1977 714001

email: timberprotectionadvice.ukca@lonza.com www.lonzawood.com

© Copyright 2014 Lonza Wood Protection.

™ VACSOL is a registered trademark of Arch Timber Protection, a Lonza company.

Lonza Wood Protection is a business of Arch Timber Protection, a Lonza company.

Disclaimer: Whilst every attempt has been made to ensure the accuracy and reliability ofthe information contained in this document, Lonza Wood Protection gives no undertakingto that effect and no responsibility can be accepted for reliance on this information.

Lonza Wood Protection updates its literature as and when necessary. Please ensure youhave an up to date copy.