Guidance Note TW9 Understanding Use Class 3 (UC3). Preservative Treated Wood
Publication Year
2023
Document Status
Current
Abstract
For outdoor wood used above the ground, such as decking or cladding boards, Use Class 3 levels of protection apply. This document details the importance and how it can be achieved through correct specification and treatment.
Document History
Issue 3: June 2023.
Publisher Information
Wood Protection Association
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.
