Wykamol Waterproof Membranes

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At Platinum Chemicals, we are proud to be one of the UK’s leading resellers of Wykamol Waterproof Membranes, supplying a complete range of BBA Certified (Certificate No: 18/5595) products for internal structural waterproofing in accordance with Type C systems as defined by BS8102:2009 . Designed to manage and control water ingress in below-ground structures such as basements, cellars, tunnels and retaining walls, these systems create dry, habitable Grade 3 environments by channelling moisture safely away from occupied spaces. The Wykamol system consists of high-performance membranes, dedicated drainage components, specialist fixings, and associated accessories – all engineered to function in harmony, providing robust and reliable protection even in high-risk, water-prone environments. What Is Type C Waterproofing and Why Is It Essential? Type C waterproofing, or cavity drain membrane systems, work by creating a controlled drainage void between the internal wall lining and the external retaining wall. Any water that penetrates the outer structure is not resisted directly, but is instead collected in a cavity and directed to a safe discharge point via channels and sump systems. The system relies heavily on the effectiveness of the drainage pathways and removal methods (via gravity or mechanical pumping) to manage groundwater ingress. It is particularly important that designers and installers consider all elements of the system – including load expectations, drainage capacity, maintenance requirements, and the presence of ground gases like radon – to ensure consistent, long-term performance. Redundancy features such as backup pumps and jetting eyes are recommended in many cases, especially where failure could result in costly damage. Wykamol Cavity Drain Waterproof Membranes: A BBA Certified Range The cornerstone of any Type C system is the cavity drain membrane itself. Wykamol offers a range of membranes, including Wykamol CM3 , CM8 , CM20 , and meshed variants like C

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