Guidance Note TW8 Understanding Use Class 4 (UC4) - preservative treated wood
Publication Year
2020
Document Status
Withdrawn
Abstract
The correct treatment specification for Use Class 4 levels of protection, as required by BS 8417 and the WPA Code of Practice - Industrial Wood Preservation, for wood in permanent ground or fresh water contact, or providing exterior structural support.
Document History
Superseded by Issue 3: Feb 2023. Issue 2: December 2020. Supersedes Issue 1: June 2020.
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.
Office 5
The Walled Garden
The Nostell Estate
Wakefield
WPA
UK
Website: https://www.thewpa.org.uk/
Email: contact@thewpa.org.uk
Tel: +44 (0)1977 558274
