PM P-40
Dimpled sheet in plate form
PM P-40 is a water-storing, perforated dimpled membrane in sheet form and is recommendable as an ideal solution for intensive roof greening. Compared to conventional green roof products, it offers many times the drainage and water storage capacity and assumes the function of an extremely high-performance drainage and water storage layer in intensive green roofs.
The 40 mm high dimples have a water storage capacity of approx. 15 l/m². This allows the optimal installation of green areas designed to do without irrigation for extended periods. The pressure resistance of approx. 200 kN/m² boasts a striking level of security, thereby corresponding to a compressive strength of approx. 20 tonnes per m². The dimpled membrane has a unusually high drainage capacity of i = 0.02; approx. 1.83 l/s·m, allowing it to be used for very large drainage lengths and/or very low roof slopes.
PM P-40 is available as a dimpled sheet in the dimensions 1.00 x 2.00 m. The plant substrate can be applied directly on the dimpled membrane after laying a separate geotextile.
Thanks to the perforation, the water-storing drainage element is permeable and can also be used for inverted roofs; this prevents a film of water from forming on the inverted roof insulation. In walkable areas without vegetation, no geotextile is used.
The base layer and the bedding material can then be applied directly on the dimpled membrane without changing the material. Then the pavement or slab covering can be laid on top of it.
| Dimpled membrane | HDPE approx. 2200 g/m² |
| Dimple height | approx. 40 mm |
| Material thickness | approx. 1,50 mm |
| Total weight | approx. 2,20 kg/m² |
| Number of dimples | 164 dimples/m² |
| Compressive strength | approx. 200 kN/m² |
| Colour | black |
| Water flow capacity in the plane i = 0.01 | approx. 0.89 l/s·m at 20 kPa rigid/soft |
| Water flow capacity in the plane i = 0.02 | approx. 1.83 l/s·m at 20 kPa rigid/soft |
| Water flow capacity in the plane i = 0.03 | approx. 2.38 l/s·m at 20 kPa rigid/soft |
| Water flow capacity in the plane i = 0.05 | approx. 3.23 l/s·m at 20 kPa rigid/soft |
| Water storage | approx. 15 l/m² |
| Plate length | 2,00 m |
| Sheetwidth | 1,00 m |
| Temperature resistance | –30 °C to +80 °C |
| Chemical properties | chemical-resistant |
| Physiological properties | safe for drinking water |
| Fire behaviour | class E |
Related accessories
PM POWER FIX
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 BUTYLKLEBEBAND (BUTYL ADHESIVE TAPE)
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.