Find a supplier here, from preservative treaters to technical consultants.
WPA Members, Treated Timber Products and Services
We only accept membership of and approve products from, organisations who can verify their quality of standards. For chemical and coating suppliers, having ISO9001 certification is a minimum mandatory requirement.
Treatment suppliers who hold WPA Benchmark Approved accreditation have gained valid independent assessment and verification of the quality of a product and/or service.
Preservative Treaters & Treated Wood Suppliers
Preservative Chemical Manufacturers
Flame Retardant Treaters & Treated Wood Products
Flame Retardant Chemical Manufacturers
Manufacturers & Products
Design & Supply
Manufacturers & Application
Timber preservative treaters & treated wood suppliers
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Members who are National Highways Sector Scheme 4 certified
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 Code of Practice: Industrial Wood Preservation.
Manufacturers: Preservatives & Flame Retardants
Flame Retardant
Treaters & Treated Timber Products
Certification of the factory process used to apply STA approved flame retardant on timbers used in the construction phase of a building.
Modified Wood
Coatings & Coating Service Providers
Application Treatment Plant: Design & Supply
Commercial members
Associate Bodies
Independent Consultantcy Services
ask the WPA for contact details
These independent consultants have experience and competence in advising on wood protection technologies and may be able to offer expert witness services.