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 |
| Max. compressive strength unfilled | approx. 144 kN/m² (DIN EN ISO 25619-2) with 8.4 % compression |
| Water discharge capacity (DIN EN ISO 12958) | i = 0.02 (=2 % roof pitch): 2.31 l/(m*s) |
| Nominal thickness | approx. 40 mm |
| Grammage | approx. 2,300 g/m² |
