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.
Product properties
| Material | Recycled HDPE |
| Nominal thickness | approx. 40 mm |
| Grammage | approx. 1,800 g/m² |
| Water discharge capacity | 2.31 l/(m*s) (at 2 % roof pitch) |
| Max. compressive strength unfilled | ca. 118 kN/m² |
Are of use
- Under extensive green roofs with increased layer structure (nature roof up to 250 mm)
- Under simple intensive green roofs with low layer structure (garden roof up to 300 mm)
- Suitable for long flow routes due to high drainage performance
Specific properties
- 100% recycled HDPE
- Suitable for inverted roofs
- Drainage according to DIN 4095
- Safe and targeted guiding of excess water
- Depositing of water in the recesses
- Low weight
- Also suitable for non-pitched roofs
- Lightweight super structure with high drainage capacity
- Recyclable
- Has a European Technical Assessment (ETA-13/0557) as part of the Optigrün system solutions