PM GEO-TEC
Drainage membrane
The triple-layer PM GEO-TEC 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 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 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 400 is multiple times higher than required by drainage standard DIN 4095. PM GEO-TEC has a compressive strength of 400 kN/m2. The drainage membrane is available in many different length and width variations.
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 |
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This product is also available with a compressive strength of 250 kN/m².