BPI Cavity Drain Floor Membrane – 20mm x 2m x 20m (40m²)

Product Description

This BPI Cavity Drain Floor Membrane is a 20mm studded membrane, suitable for Type C waterproofing and delivering a grade 3 environment to BS8102:2022 and NHBC Chapter 5.4. It is the highest drainage capacity membrane in the BPI Waterproofing range. This 20mm membrane is also an excellent radon barrier and has passed all the relevant tests for resistance to this gas.

Special Features

• Part of a type C cavity drain membrane system in line with BS8102:2022.
• Gives a high water void volume of 14 litres/m².
• Quick to install – easy to roll out along floors.
• Creates a dry, habitable living space in areas previously suffering from damp or wet conditions.
• Easily cut down using a sharp blade.
• Waterproof, salt inhibiting, root and contaminate resistant.
• Little or no damage to the existing structure.
• Low and high-temperature tolerance.
• High-grade material.
• Ideal radon barrier membrane

Typical Uses

• Radon barrier approved
• Walls
• Floors
• Vaults
• Tunnels
• Above and below ground level Waterproofing applications.

Other Available Sizes

• BPI Cavity Drain Floor Membrane – 20mm x 2m x 10m (20m²)