Drainage and Storage Board FKD 40
Optigrün Drainage and Storage Board FKD 40 is installed beneath extensive green roofs and single-layered intensive green roofs for drainage and water storage.
Characteristics
Material | Recycled HDPE |
Nominal thickness | approx. 40 mm |
Water reservoir unfilled | small naps facing up (lettering readable) = approx. 8.7 l/m² |
Grammage | approx. 1,800 g/m² |
Max. compressive strength unfilled | approx. 118 kN/m² (DIN EN ISO 25619-2) |
Water discharge capacity (DIN EN ISO 12958) |
i = 0.02 (=2 % roof pitch): 2.31 l/(m*s) |