Delta MS20 Membrane (2m x 20m) – Cavity Drain Membrane

: £282.33
£244.50 £293.40

Delta MS 20 is a High Capacity Wall and Floor Waterproof Membrane.

2.0m x 20m

With superior drainage capacity and compressive strength, this waterproof and vapour proof membrane is used as part of a Type C waterproofing system.

This premium quality cavity drain membrane has 20mm to deal effectively with water ingress and provide a high capacity drainage void.

Delta MS20 comes in a 40m2 roll, making it great value for waterproofing basement floors and walls.

Uses of Delta MS20:

Delta MS20 is primarily used in basement waterproofing for new build and refurbishment projects.

It’s also used to provide cavity drainage waterproofing to tunnel and civil engineering projects where a high drainage capacity is required.

Delta MS20 is used for example:

  • to waterproof basement and cellar floors and slabs subject to water ingress,
  • as a waterproofing membrane in areas subject to vibration,
  • in listed or historic buildings where a reversible waterproofing system is required.


Delta MS20 is installed stud side facing the floor. Joints in the Delta MS20 are sealed using Delta Tape and Delta Corner Strip – you can buy both with us too.

Delta MS20 is usually used horizontally, but can be used vertically too.

Preparation varies depending on application. Full installation instructions are provided and available to download.

Weight40 kg
Dimensions20 × 2 × 20 cm

BBA Certificate Delta MS20

2 reviews for Delta MS20 Membrane (2m x 20m) – Cavity Drain Membrane

  1. Michael Jones

    Good product for basement floors. Really sturdy.

  2. Tim Wilson

    Top quality membrane. Thick material. Quite heavy but I suppose that’s a sign of quality. Used this on lots of basement and never had a problem.

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