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The WPA administer industry recognised quality schemes to further assure products and processes are fit for purpose, available to members and non-members alike.

The WPA Benchmark Quality Approval (QA) schemes cover formulations, processes and products – providing valid independent assessment and verification. Discover what's involved as part of the approval processes here.

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. 

We have a wealth of members who supply timber treatment formulations, process treatments, complete treated products, treatment plant & control systems and consulting services – find who and what you're looking for here.