Basement Cavity Drain Membranes

Keep your property dry with our range of high-performance basement waterproofing membranes and cavity drain membrane systems. Designed for below-ground waterproofing, these membranes protect basements, cellars and other structures against water ingress, damp and mould. Whether you need a waterproof membrane for basement walls or a complete drainage solution, Preservation Shop supplies quality products trusted by contractors and homeowners across the UK.

What Are Basement Membranes?

A basement waterproof membrane (sometimes called a cellar membrane or cavity drain membrane) is a tough, studded plastic sheet applied to internal walls and floors. It allows moisture to move behind the surface while protecting the living space, preventing damp patches, peeling plaster and structural damage. When connected to a drainage system or sump pump, cavity drain membranes provide long-lasting basement waterproofing.

Our Range of Cavity Drain Membranes

We stock a wide choice of sizes and thicknesses to suit every project, including:

• Wall and floor membranes for basements and cellars
• High-strength studded membranes for walls under pressure
• Specialist cellar membranes for vaulted or uneven spaces

All products are compatible with our full range of membrane tapes, fleece tapes, fixing plugs and drainage channels, ensuring a complete waterproofing solution.

Alternatively, view our Above Ground Cavity Drain Membranes.