Quality Assurance

ISO 9001 Management Systems

ISO9001 is the international standard that certificates the management systems operated by a business in manufacturing a product. Certification under ISO9001 is a mandatory requirement for chemical and coating suppliers seeking membership of the WPA.

WPA Approval Scheme for wood preservatives and flame retardants

For industrially applied wood preservatives and flame retardants manufactured under ISO9001, the WPA operates a product approval scheme. The aim of the scheme is to provide independent assessment and verification of the performance and efficacy data on which the manufacturers treatment recommendations are made.

Participation in the Approval Scheme by wood preservative manufacturers is voluntary. For suppliers of flame retardant treatments where their performance is a safety critical factor in building design WPA approval is a mandatory requirement for use in a WPA quality assured process.

For the current schedule of WPA approved wood preservatives click: WPA approved

For details of WPA approved flame retardant formulations, treaters and materials click here

Quality Assurance 

WPA operates a number of product approval and quality assurance schemes which benchmark and verify the quality of a wood preservative or flame retardant formulation, the treatment process and treated wood materials against specific UK and European performance standards. These quality schemes are:

- WPA Benchmark Quality Scheme for preservative pre-treated wood

- WPA Benchmark FR Quality Scheme for flame retardant application processes and materials

- WPA FR Build Quality Scheme for timber frame components approved by Structural Timber Association 

WPA Benchmark 
This scheme relates specifically to the durability (resistance to biological degradation) of wood and wood based materials pre-treated with preservative by an industrial process. 

Individual treated wood products certificated under this scheme are verified as being compliant with BS8417, the wood preservation code of practice - for either 15 or 30 years desired service life.

 

WPA Benchmark Certificated preservative treated wood products and service treaters

Supplier

Benchmark Certificated Product/Service

Contact details

BSW Timber
Cargo
Carlisle
CA6 4BA

Certificate No: TW2012004
Easi-Post 15: Incised spruce fence or deck posts treated with Tanalith E

Tel: 01228 674221
E: sales@bsw.co.uk
W: www.bsw.co.uk

Bond Timber Trerulefoot Saltash Cornwall
PL12 5BW

 

 

Certificate No: TW 2012001
Redwood components preservative treated with Tanalith E in accordance with BS 8417 for Use Class 4, ground contact applications.

Tel: 01503 240308
E: andy@whbond.co.uk
W: www.whbond.co.uk

 

Scanpole BBH
Alexandra Dock
Newport South Wales
NP20 2WA

 

Certificate No: TW2011003
Creosote treated pine poles, sleepers, fencing and Osmose AC500 treated pine poles and fencing – Use Class 4

Tel: 01633 235845
E: info@bbhpreservingwood.co.uk
W: www.bbhpreservingwood.co.uk

 

Calders & Grandidge
194 London Road Boston
Lincs
PE21 7HJ

 

 

Certificate No: TW2011004
Round and sawn redwood components for ground contact (Use Class 4) applications and, redwood and whitewood components for out of ground (Use Class 3) applications treated with Osmose AC500 preservative

Tel: 01205 312420
enquiries@caldersandgrandidge.co.uk
W: www.caldersandgrandidge.com

 

 

Södra Timber Ltd
Peel Ports
Medway
Sheerness Docks Sheerness
Kent
ME12 1RS

Certificate No: TW2012005
Softwood preservative treated with Osmose Celcure AC350 and Protim E406 in accordance with BS8417 for construction applications

Tel: 01285 646000
E: ukinfo@sodra.com
W: www.sodra.com/en/wood/products-for-uk-and-ireland-timber.co.uk


Cordiners Sawmills Ltd North Deeside Road
Banchory
Scotland
AB31 5PY


Certificate No: TW2016001
Sawn and round pine treated by a high pressure impregnation process in accordance with BS8417 - 15 years desired service life

 

Tel: 01330 823366
E: info@cordiners-sawmills.com
W: www.cordiners-sawmills.com

 

 

Glenalmond Timber
Shore Road
Perth Harbour
Perth
PH2 8BD


Certificate No: TW2012002
Timber components preservative pre-treated by low pressure impregnation with Vacsol Aqua in accordance with BS 8417 for constructional applications

Tel: 01738 587988
E: martin@glenalmondtimber.com
W: www.glenalmondtimber.com

 


 

Imprest AS
Ojaküla
Lääne-Virumaa
Estonia

 

 

Certificate No: TW201302
Incised spruce posts pressure treated with Tanalith E8000 in accordance with BS8417 for Use Class 4 ground contact applications.

Tel: +372 507 6924
E: tonis@imprest.ee
W: www.imprest.ee

 

 

Hoppings
The Woodyard
Epping
Essex
CM16 6TT

Certificate No. TW2017001
All solid wood materials supplied under the Q_Deck, Q-Slip, Q-Garden and Q-Shaes Brands

 

Tel: 01992 578877
W:https://www.hoppings.co.uk

 

 

James Davies (Abercych) Newbridge Sawmills
Cenarth Newcastle Emlyn Ceredigion
SA38 9LA

 

Certificate No: TW2012003
Pine and Douglas fir (round and sawn) treated with Tanalith E for a Use Cass 4 application, 15 year desired service life

 

 Tel: 01239 682477
E: info@jamesdaviessawmills.co.uk
W: www.jamesdaviessawmills.co.uk

 

 

M & M Timber
Hunt House Sawmills
Clows Top
Kidderminster DY14 9HY

Certificate No: TW2011002
Osmose MicroPro treated radiata pine, home-grown pine, larch and Douglas fir Incised Agricised round posts

Tel: 01299 832611
E: sales@mmtimber.co.uk
W: www.mmtimber.co.uk

Rafferty Roof Trusses
Unit 2 169a Agivey Rd Aghadowey Coleraine
BT51 4AB

Certificate No: FRB201401
Preservative impregnation of general carcassing and construction timbers (joists/studs/rimbeam/plywood) in accordance with BS8417 desired service life specifications

Tel: UK 0845 5217626
Ireland: 02870441061
E: info@raffertyroftrusses.co.uk
W: www.raffertyrooftrusses.co.uk

 

Walford Timber

The Sawmills Walford Ross-on-Wye
HR9 5QS

Certificate No: TW2011001
The “PermaTimber” range

 

Tel: 01989 563614
E: info@walfordtimber.co.uk
W: www.walfordtimber.co.uk

W J Components
Rix Road
Stoneferry
Hull
HU7 0BT

Certificate No: TW2011005
Service treatment of pine components with Wolman CX10 wood preservative for Use Class 3 and 4 applications with a desired service life of 15 years

Tel: 01482 338950
E: info@wjcomponents.co.uk
W: www.wjcomponents.co.uk

Marley Eternit Ltd
The Old Shipyard Gainsborough Lincolnshire
DN21 1NG

Certificate No: TW2012006
Osmose AC350, E415 and FirePro treated products

Tel: 01427 613858
E: info@marleyeternit.co.uk
W: www.marleyeternit.co.uk

WPA Benchmark FR 
This quality scheme relates to both the factory process used to apply a WPA approved flame retardant formulation as well as the materials that are produced i.e. solid wood and wood-based materials such as panel products. Application processes are audited annually to ensure they remain compliant with WPA Benchmark FR scheme criteria.

Materials certificated under this scheme must use a flame retardant manufactured under an ISO9001 quality management system and which have their fire test classifications and performance data approved under the WPA's independent product approval scheme. 

The WPA approval scheme for flame retardants and Benchmark FR process and materials approval scheme interlock with one another to provide specifiers with reassurance about the quality and performance of flame retardant treated wood.

WPA Benchmark FR approved flame retardant formulations, treaters and materials

WPA Benchmark FR Processor

Certificate 

Contact details

Lonza Wood Protection
Wheldon Road Castleford
West Yorkshire WF10 2JT

FR201101

Tel: 01977 71400
E:timberprotectionadvice.ukca@lonza.com
W: www.archtp.com

WJ Components Ltd
Rix Road
Stoneferry
Hull
HU7 0BT

FR201102

Tel: 01482 338950
E: info@wjcomponents.co.uk
W: www.wjcomponents.co.uk

WPA Benchmark FR Materials Manufacturer/Supplier

Certificate No:  

Medite Smartply 
Persimmon House,
Anchor Boulevard
Crossways Business Park, Dartford

Kent
DA2 6QH

 

FR201302

Tel: +353 (0)5185133
E: info@mdfsob.com
W: www.mdfsob.com

 

WPA FR Build
This quality scheme is operated by WPA for the Structural Timber Association (STA). It relates to wood, panel products and engineered wood components defined in STA Product Paper 1 that have been treated with an STA approved FR Build flame retardant to provide protection from fire in the construction phase of a building. The WPA FR Build quality scheme provides third-party certification of the factory process used to apply the STA approved flame retardant.

WPA FR Build certificated products for timber frame buildings
Supplier
Benchmark FR Build Certificated Product/Service
Contact details

Södra Wood Ltd
Peel Ports
Medway
Sheerness Docks Sheerness
Kent
ME12 1RS

WPA Certificate No: FRB2012001

For the fire retardant treatment of wood, wood based sheet materials and engineered wood products in accordance with the Structural Timber Association.

Tel: 01795 596476
E: ukinfo@sodra.com
W: https://www.sodra.com/en

Glenalmond Timber
Shore Road
Perth Harbour
Perth PH2 8BD
Scotland

WPA Certificate No: FRB2011001

Flame retardant treated general carcassing and structural elements (joists/studs/rimbeam/plywood) in accordance with the Structural Timber Association FR Build requirements.

Tel: 01738 587988
E: enquiries@glenalmondtimber.com
W: www.glenalmondtimber.com

James Donaldson & Son
Elm Park Sawmills
Leven
Fife KY8 4PS
Scotland

 

WPA Certificate No. FRB2017001

Flame retardant treated general carcassing and structural elements (joists/studs/rimbeam/plywood) in accordance with the Structural Timber Association FR Build requirements.

Tel: 01333 422222
E: elmpark@donaldson-timber.co.uk
W: http://www.don-timber.co.uk/

SMARTPLY EUROPE DAC Belview
Slieverue
County Waterford Ireland

WPA Certificate No: FRB2013001

SmartPly 18 mm FR Build OSB/3  
SmartPly 15 mm FR Build OSB/3

Tel: +353 (0)5185133
E: info@mdfosb.com
W: www.mdfosb.com
 

Rafferty Roof Trusses Ltd
Unit 2 169a Agivey Rd Aghadowey Coleraine
BT51 4AB

WPA Certificate No: FRB201302


Flame retardant treated general carcassing and structural elements (joists/studs/rimbeam/plywood) in accordance with the Structural Timber Association FR Build requirements

Tel: UK 0845 5217626
Ireland: 02870441061
E: Basil@raffertyrooftrusses.co.uk
W: www.raffertyrooftrusses.co.uk

Trade Fabrication Systems Ltd
18 Chesford Grange, Woolston,
Warrington WA1 4RQ

WPA Certificate No: FRB/2015001


Product certificated: Norbord No Burn 18mm OSB/3

Tel: 01925 821199
sales@tradefabricationsystems.co.uk
www.tradefabricationsystems.co.uk

     

National Highways Sector Scheme 4

National Highways Sector Schemes exist to ensure that quality management practices are applied consistently to materials supplied for motorway and county trunk road contracts. Every aspect of highways construction and repair is covered by a specific sector scheme. Procedures for treated wood fencing specification and procurement is covered in Sector Scheme 4 (SS4). Companies must be ISO9001 certificated as SS4 compliant before they can bid for treated wood supply contracts on highways projects.

Much of the SS4 Scheme Document published by UK Accreditation Services (UKAS) is based on and makes direct reference to WPA Quality Guidance Note 2 (QGN2) and the specifications and practices set out in the WPA Manual of Wood Preservation.

WPA Treaters that are ISO9001 - SS4 Certified

SS4 Certificated supplier

Contact details

A & J Scott
Alnwick,
Northumberland

Tel: 01668 217288

Balcas Limited
Enniskillen,
Northern Ireland

Tel: +44(0)28 6632 3003

Bond Timber
Saltash,
Cornwall

Tel: 01503 240308

BSW Timber Group
Earlston
Berwickshire

Tel: 0800 587 8887

Burt Boulton & Haywood
Newport,
South Wales

Tel: 01633 235845

Calders & Grandidge
Boston,
Lincolnshire

Tel: 01205 312420

   

Charles Ransford & Son
Bishops Castle,
Shropshire

Tel 01588 638331

Taylormade Timber Products
Sherburn Hill,
County Durham

Tel: 0191 372 0524

Jacksons Fencing
Ashford,
Kent

Tel: 01233 750393

W J Components
Stoneferry,
Hull

Tel: 01482 338950

 

Windymains
Humbie
East Lothian
EH36 5PA

Tel: 01875 321950

 

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WPA Quality Assurance and Product Approval Schemes

Setting the standard for wood preservation and flame retardant treatment quality

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