Leading International Trade Fair for Urban Green and Open Spaces.

14 - 17 September 2022 // Nuremberg, Germany

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Exhibitors & Products GaLaBau 2022
Zoom Image LOGO_PM P-60 water retention element with 20 I/m²

PM P-60 water retention element with 20 I/m²

LOGO_PM P-60 water retention element with 20 I/m²

PM P-60 water retention element with 20 I/m²

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PM P-60 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 60 mm high dimples have a water storage capacity of approx. 20 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 = 0.10; approx. 3,86 l/(s·m), allowing it to be used for very large drainage lengths and/or very low roof slopes.

PM P-60 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.

PM P-40 is a comparable variant with 40 mm high dimples, whose water storage capacity is 15 l/m².

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