Drainage and Storage Board FKD 20
Optigrün Drainage and Storage Board FKD 20 under extensive green roofs with a multilayer construction. Also suitable for use on inverted roofs.
Product properties
| Material | Recycled HDPE |
| Nominal thickness | approx. 20 mm |
| Grammage | approx. 0.9 kg/m² |
| Water discharge capacity | approx. 0.97 l/s x m (at 2% roof pitch) |
| Compressive strength | approx. 120 kN/m² |
Area of use
- As a drainage and storage board under extensive green roofs in a triple-layer structure with filter leece FIL 105 and extensive multi layer substrate E on flat roofs up to RP 5° (= 8.8%)
- Not suitable for use under walking surfaces or road surfaces
Specific properties
- 100% recycled HDPE
- 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