8-200 / DRAINAGE MEMBRANE

Advantages:

• Compared to normal dimpled membranes, the drainage membrane 8-200 offers a high drainage and water storage capacity and assumes the function of a protective and water storage layer in green roofs
• The 8 mm dimples have a water storage capacity of approx. 3 L/m²
• The pressure resistance of approx. 200 kN/m² offers a high level of security, corresponding to a compressive strength of approx. 20 tonnes per m²
• The 8 mm dimpled membrane also offers a high drainage capacity
• The plant substrate can be applied directly on the dimpled membrane after laying a separate geotextile
• Thanks to the perforation, the water-storing drainage membrane 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 drainage membrane without changing the material, and then the pavement or slab covering can be laid on top of it

Installation:

• The sealed surface must thoroughly cleaned so that no damage can occur to the sealing after laying the drain age membrane
• Lay a non-woven fabric as a protective and separating layer with at least 300 g/m² on the sealing
• The drainage membrane 8-200 is laid horizontally with the dimples to the surface by rolling it out, with the dimple openings facing upwards
• The drainage membranes are overlapped by 10 cm (four rows of dimples)
• The drainage membrane can be cut to the required length with a knife, but do not damage the sealing
• If the laid membranes have to be extended, the connecting membrane is pushed under at least 20 cm from below. The horizontal overlaps must be shingle-like in the direction of the water flow
• On rising components, the drainage membrane should be raised at least 10 cm (4 rows of dimples)
• The drainage membranes are laid step by step
• Then install a geotextile as a filter layer over the entire laid surface. The plant substrate can then be applied directly