Wykamol CM8 Tanking Membrane

Product code CM8-40M
  • RRP £123.50
  • £148.20
  • £123.50
(46 items in stock)

Wykamol CM8 is a versatile tanking membrane has been developed for a variety of waterproofing and damp proofing applications. It can be used either above ground or in below ground tanking systems, such as in Type C waterproofing in basements.

CM8 is manufactured in the UK from high-density polyethylene (HDPE) and is impermeable to water, water vapour and radon gas. The product provides an effective barrier to the transmission of salts or other contaminants from the substrate.  Typical uses include protection against the effects of water ingress by isolating walls, floors, vaults and tunnels.

The 8mm high membrane has stand-off studs to provide drainage capacity as part of a cavity drain tanking system with provision made for disposing of water build-up behind the membrane to a drainage outlet point or to am pump and sump.

The membrane is quick and easy to install. Whilst being extremely robust, it sufficiently compliant to fold neatly around corners and is easy to trim with a standard utility knife.  When tanking walls, special membrane plugs can be used to fix battens in front of the membrane to accommodate a fixed stud wall.  When using on floors it can be used with a concrete screed, insulated screed or with a floating dry board system.

CM8 tanking membrane is suitable for use in Type C (drained protection) constructions in accordance with BS 8102 : 2009.  The membrane is BBA approved and can be used In accordance with NBS Specification J40 (clause 290) –Flexible Sheet Tanking / Damp Proofing.

Roll sizes: 40m2 (2m x 20m) and 48m2 (2.4m x 20m).

  Wykamol CM8   Data
  Material   HDPE
  Sheet Thickness   0.8mm
  Membrane Height   8mm
  Stud Height   7mm
  Water Void Capacity   4.95L//m²
  Weight   0.5 Kg/m² 
  Water tightness at 60 kPa   >24 hours
  Working Temperature   -50°C to +80°C
  Softening Temperature   126°C
  Mean Compressive Strength   169 kN/m² 

There are no reviews yet.

Write a review

    Overall satisfaction
    Value for money
    Ease of use

See also

4 items

Membrane Plugs

Hammer-in fixing with waterproof seal for use with Baseline 8 & Thermseal waterproofing membranes. Screw wall studs directly into aperture located in plug head. Quantity: 100/ 200
  • RRP £49.00
  • £41.88
  • £34.90
Rating 4.6 of 5

Waterproofing Tape

A high quality waterproofing tape that is applied to the lap joints of abutting cavity-drain membranes. This flexible butyl rubber tape forms a water-tight joint seal. 22.5m x 28mm
  • RRP £39.75
  • £27.48
  • £22.90

Pump Sump Kit

A heavy duty pump in a high quality water sump. This single pump sump kit is designed as part of a cellar or basement waterproofing system to remove water drained from cavity drain basement membranes
  • RRP £720.00
  • £718.80
  • £599.00

Waterproof Membrane – Baseline 8 Kit

Waterproofing membrane kit with everything needed for waterproofing 40m2 or 48m2 of floor or wall. Fix studs to basement membrane plugs for dry-lining walls. Lay screed direct.
  • RRP £306.75
  • £202.40
  • £168.67