PM TERRA-TEC
Drainage membrane
PM TERRA-TEC is the new champion among protection and drainage systems and thus the best solution for vertical surface drainage on all pressure-stable surfaces.
PM TERRA-TEC consists of an innovative dimpled membrane with specially reinforced and trowalised dimples for extra-high drainage capacity and extreme compressive strength.
The extra large number of dimples and a smooth reverse side ensure the best load distribution and perfect protection on the waterproofing. In addition, there is a new type of overlap system based on the push-button principle. This is easy to apply and completely weather-independent. The laminated high-quality, particularly stable geotextile rounds off the range of product advantages perfectly. This two-layer system reliably protects the waterproofing underneath against mechanical damage, but also against damaging thermal stress.
PM TERRA-TEC has an extreme compressive strength of approx. 500 kN/m². The product is available in seven widths from 0.50 to 2.50 m. The optimum water drainage capacity is many times higher than required by the DIN 4095 drainage standard.
PM TERRA-TEC reliably protects external basement walls and retaining walls from waterlogging. The moisture passes through the geotextile into the dimpled channels where it is safely drained away. The geotextile acts like a filter and prevents the dimple channels from becoming clogged. The optimal high-performance geotextile has a very high initial strength with minimal deformation under increasing service loads.
PM TERRA-TEC also forms an efficient gas drainage layer on basement walls, so that methane gas or radon can be discharged unhindered to the outside of the basement.
Dimpled membrane | HDPE |
Geotextile | polypropylene |
Dimple height | approx. 11 mm |
Total weight | approx. 700 g/m² |
Number of dimples | approx. 4000 dimples/m² |
Compressive strength | approx. 500 kN/m² = 50 t/m² |
Colour | yellow gold |
Water flow capacity in the plane i = 1.0 | approx. 3,15 l/s·m at 20 kPa soft/soft |
Water flow capacity in the plane i = 0,01 | approx. 0,24 l/s·m at 20 kPa hard/soft |
Water flow capacity in the plane i = 0,02 | approx. 0,35 l/s·m at 20 kPa hard/soft |
Water flow capacity in the plane i = 0,03 | approx. 0,45 l/s·m at 20 kPa hard/soft |
Water flow capacity in the plane i = 0,05 | approx. 0,60 l/s·m at 20 kPa hard/soft |
Roll length | 12,5 / 15 / 20 m |
Roll width | 0,5 / 0,75 / 1,0 / 1,5 / 2,0 / 2,4 / 2,5 m |
Contact surface to the Substrate | approx. 0,7 m²/m² |
Temperature resistance | –30 °C bis +80 °C |
Chemical properties | chemical-resistant |
Physiological properties | safe for drinking water |
Characteristic opening width | approx. 170 μm |
Water permeability EN ISO 11058 |
approx. 100 · 10-3 m/s |
Fire behaviour | class E |