Current
Core Supplement
Guidance Note
The purpose of this guidance note is to help NTR registered treaters match NTR treatment classes to the UK's BS EN 335 Use Class system for wood preservation, so they can provide TDUK members with the appropriate treated product for the UK market.
Issue 1: June 2023.
The Wood Protection Association (WPA) is a not-for-profit timber trade organisation. The WPA champions and provides advice on industrial wood treatment technologies that enhance the performance of softwood products. Covering: preservative treatments, wood modification and factory applied flame retardant treatments.
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
We connect trusted knowledge to customers' workflows – mitigating risk, increasing efficiency and accelerating innovation For more than 60 years, leading R&D and engineering-intensive organizations have relied on us to achieve on-time, on-budget delivery of complex projects and new products. We deliver an unparalleled combination of technical content and Artificial Intelligence (AI) technologies to surface answers from the vast universe of technical knowledge, both inside and outside the organization. In a single interface, we connect the dots between information scattered across many different sources, allowing technical professionals to make better, more informed decisions faster.