Skip to product information
1 of 1


External waterproofing membrane 40 sqm for below ground applications

External waterproofing membrane 40 sqm for below ground applications

Regular price £179.99 GBP
Regular price Sale price £179.99 GBP
Sale Sold out
Tax included. Shipping calculated at checkout.

A robust double-layered external waterproof membrane for waterproofing foundations in new-build applications.

Layer 1 – High density polyethylene membrane with 7mm studs giving great strength and draining capacity.
Layer 2 – Geotextile mat to prevent particles from blocking cavity or drain.
BS 8102: 2009 – Type C compliant – waterproofing below ground.

Geotex Membrane Properties

Membrane size: 2 x 20m (40m2)
Roll diameter: 400mm
Density: 0.61 kg­/m2 

Cuspated Drainage Sheet

Capsulate/ Stud height: 7mm
Compressive Strength:  180 kN/m2

Nonwoven Filter Geotextile

Apparent Pore Size 90% finer:  85microns
Waterflow capacity (l­/sec/m2):  80 (= 480 l/min/m2).

If using as capping membrane you will need waterproofing tape at  lap joints.
If using as an external foundation waterproofing membrane you will also need some epoxy sealing paint, capping strips, membrane plugs and seals.


Shipping & Returns


Care Instructions

View full details
  • Free Shipping

    We offer free shipping on order over £50. This excludes heavy items such as certain membranes and powders.

  • Hassle-Free Exchanges

    We offer exchanges for products where they haven't been opened.

    Not sure what product you need get in touch and one of our technical managers can talk you through the options for you