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Triton TM20 Cavity Drain Membrane


Product Description

Triton TM20 Waterproofing Membrane is BBA-approved as suitable for type ‘C’ Cavity Drain Membrane Systems in accordance with BS8102 and now includes our high-vis yellow membrane.

The TM20 Basement Cavity Drain Membrane now replaces the Triton Platon P20 membrane.

This waterproofing membrane is the highest drainage capacity membrane in the TM range, giving a void of 14 litres/m². Suitable for use on floors and walls in very wet situations, or where a large stud height is needed to maximise insulation values.

TM20 creates a dry, habitable living space in areas previously suffering from damp or wet conditions.


  • Part of a Type C Cavity Drain Membrane System, in line with BS8102:2009
  • Gives a high water void at a 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/wet conditions
  • Easily cut down using a sharp blade
  • Waterproof, salt inhibiting, root and contaminant resistant
  • Little or no damage to the existing structure
  • Low and high temperature tolerance
  • High grade material
Weight 42.0 kg
Dimensions 210.0 × 10.0 × 100.0 cm

2 x 5m (10m2), 2 x 10m (20m2), 2 x 20m (40m2)


No Technical Details Available

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