The WPA Benchmark (TW) Quality Approval Scheme is administered by the UK Wood Protection Association (WPA). It relates specifically to the durability of wood and wood based materials pretreated by an industrial process.

As an Approved Treater our treatment plant(s) have been subject to audit and shown to have robust systems in place which demonstrate we are capable of producing correctly treated material under the terms of the WPA Benchmark scheme.

Our Approved Products* are those for which the production process has been subject to audit and
for which the penetration and retention of preservative, as required in the WPA Code of Practice, has also been assured by direct testing or by safe relationship testing.

(*itemised on our WPA Benchmark accreditation certificate.)

Learn more here: www.thewpa.org.uk/quality-schemes