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Certificate 25/7462 Mapei (UK) Limited. Wykamol Waterproofing System. Wykamol CM3 Cavity Drain Membrane. Product Sheet 1
Publication Year
2025
Document Status
Current
Abstract
Relates to Wykamol CM3 Cavity Drain Membrane, a high-density polyethylene (HDPE) membrane for damp-proofing walls, floors and ceilings in new construction or in existing buildings. It can be used above or below ground, over a contaminated or damp background, to support a dry lining or flooring. 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: 26 September 2025. Supersedes Certificate no. 18/5595
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.
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