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.


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)