Certificate 25/7477 WestWood Liquid Technologies Ltd. Wethan 275 LQ. Wethan 275 LQ liquid applied roof waterproofing system. Product sheet 1
Publication Year
2025
Document Status
Current
Abstract
Relates to a liquid-applied waterproofing system incorporating glass fibre reinforced polyurethane membranes for use on new and existing flat roofs with limited access. Key factors assessed were mechanical resistance and stability, safety in case of fire, hygiene, health and the environment, safety and accessibility in use, protection against noise, energy economy and heat retention, sustainable use of natural resources, and durability.
Document History
Date of Issue: 3rd December 2025.
Publisher Information
British Board of Agrément
The British Board of Agrément have been providing authoritative and independent information on the performance of building products for over 40 years. The certificates they produce contain data on durability, installation and compliance with Building Regulations.
