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Drainage membrane

The triple-layer PM GEO-TEC-ECOnopp protection and drainage system is a high-quality supplement to polymer modified bituminous thick coatings (PMBC) for outer basement walls. Thick coatings act as a permanent sealing, filling in cracks and joints, but for backfilling or subsequent soil settling, they can be extremely sensitive to impacts and pressure. The result: elaborate time-intensive and thus cost-intensive safeguarding work for the backfilling process and the risk of later complaints. The PM GEO-TEC-ECOnopp solution gives you a complete multi-layer protection and drainage system for earth-contacting structures fitted with bituminous thick coatings or other sealants.

PM GEO-TEC-ECOnopp consists of a dimpled membrane, a sturdy geotextile and a rear-side sliding film. The sliding film distributes the effective earth pressure and acts as a sliding surface in case of any settling of the filling soil. The protective effect meets the requirements of DIN 18533. Moreover, the excellent water draining capacity of PM GEO-TEC-ECOnopp is multiple times higher than required by drainage standard DIN 4095.
PM GEO-TEC-ECOnopp has a compressive strength of 400 kN/m². The drainage membrane is available in many different length and width variations.

Our sustainable, environmentally friendly and resource-saving product line. The use of regranulates relieves the burden on the environment, reduces energy consumption compared to new plastics and reduces CO2 emissions. This closes the recycling cycle - without even making any compromises on quality or economic efficiency.

Dimpled membrane HDPE
Sliding film LDPE approx. 200 μm
Geotextile polypropylene
Total weight approx. 1000 g/m²
Dimple height 8 mm
Compressive strength 400 kN/m² = 40 t/m²
Water flow capacity
in the plane
approx. 2,62 l/s·m at 20 kPa rigid/soft
Roll length 12,5 / 15 / 20 m
Roll width 0,5 / 0,75 / 1,0 / 1,5 / 2,0 / 2,5 m
Air volume between the dimples approx. 5,5 l/m²
Temperature resistance –30 °C to +80 °C
Chemical properties chemical-resistant
Biological properties resistant to bacteria and fungi, rot-resistant, root-resistant
Physiological properties safe for drinking water
Characteristic opening width approx. 170 μm
Water permeability
EN ISO 11058
approx. 100 · 10-3 m/s

This product is also available with a compressive strength of 250 kN/m².

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Related accessories


PM RANDABSCHLUSS­PROFIL in metal or plastic. A practical edge trim profile as the top finish for dimpled and drainage sheets.


PM MONTAGEKNÖPFE with hardened steel nails. Steel nails with assembly buttons for the rational fastening of dimpled and drainage sheets to concrete and masonry.


PM POWER FIX high-performance adhesive is a permanently elastic adhesive for gluing and connecting PMI DPC, PMI dimpled and drainage sheets and PMI roofing membranes.


PM BUTYL ADHESIVE TAPE, 20 mm wide. Waterproof butyl rubber compound with strong adhesive on both sides for sealing and bonding wind and vapor barriers, underlay membranes, dimpled and drainage membranes as well as DPC.