CM20 Cavity Drain Waterproof Membrane

CM20 Cavity Drain Membrane: Superior Waterproofing Solution

The CM20 Cavity Drain Membrane is a powerful tool in the arsenal of waterproofing professionals. This 20mm studded membrane delivers a grade 3 environment to BS8102:2009 and NHBC Chapter 5.4, making it suitable for Type C waterproofing. Featuring the highest drainage capacity in the Wykamol Waterproofing range, this membrane can transform damp, wet spaces into dry, habitable living areas.

High Capacity, High Performance

• High water void volume of 14 litres/m2, offering superior drainage capacity.
• Suitable for use on floors and walls in very wet situations, or where a large stud height is needed to maximise insulation values.
• BBA-approved as suitable for type ‘C’ Cavity Drain Membrane Systems in accordance with BS8102.
• Forms part of a type C cavity drain membrane system in line with BS8102:2022.

Convenient and Durable

• Quick and easy to install, the membrane rolls out along floors.
• Available in 2m width as 20m and 10m rolls. The 10m roll is light enough for individual manual handling.
• Easily cut down using a sharp blade for specific application requirements.
• Little or no damage to the existing structure during installation.

Robust Quality

• Manufactured from high-grade material, the CM20 is designed to last.
• Resistant to water, salt, roots, and contaminants.
• Tolerant of both low and high temperatures.

By installing the CM20 Cavity Drain Membrane, you can transform your damp or wet spaces into dry, habitable living areas.