RUK Geodrain 10 external cavity drainage membrane provides outstanding drainage and physical protection over underground foundation walls. Supplied on a 2m x 12.5m roll, this membrane is a HDPE black dimpled sheet (10mm profile) with a nonwoven geotextile sheet attached over the dimples. This creates a continuous airgap for reliable ventilation and drainage of water inflow from the surrounding soil.
This system works well in many applications such as, basements, underground parking garages, roof terraces etc.
In some circumstances you may wish to brush apply a waterproof layer beforehand. For this please see LVM (liquid vapour membrane). Fixing Plugs can be used at the top of the membrane for a secure fix (only use these at the top above the external ground level). Capping strips in 2m lengths are also available to run across the top to prevent debris from entering the gap between the membrane and geotextile sheet.
We would suggest considering the use of a land drain/perforated pipe at the base of the membrane to collect and divert water.
Benefits:
- Permanent air gap, suspended soil particles in the water are filtered out by the geotextile sheet
- Excellent drainage performance
- Allows backfilling with excavated earth
- Protects the structure from water and ground chemicals
- Outstanding compressive strength (400 kN/m²)
- Impervious to root penetration, rot proof and unaffected by soil bacteria and fungi.
Manufactured in compliance with Regulation (EU) No 305/2011 of the European Parliament. Assessed and verified to the standards described in EN 13967:2012.
