LIGHTWEIGHT ROOF
SOLUTION 1: 0-5°

Characteristics
- The lightest green roof solution available.
- Erosion-proof system solution; can only be used with a secured waterproofing system. Not suitable for inverted roofs.
- Can be used on roofs with zero degree drainage falls, subject to certain limitations.
- Increased maintenance requirements and installation costs in comparison to an Economy Roof solution.
Weight * | 58 kg/m² or 0.58 KN/m² * |
Build-up depth | 50 mm |
Roof pitch | 0 - 5° (0 - 9 %) |
Vegetation form | sedum |
Water retention | 40 - 50 % |
Discharge coefficient ** | C=0.63 - 0.65 |
Water storage | approx. 18 l/m² |
Ecological value | ![]() |
Maintenance costs | ![]() |
Cost factor ** | ![]() |
* | Weight specifications refer to saturated conditions; dry weight is approximately 50 - 60 % of the saturated weight. |
** | Depends on slope and system solution. Determined at 0° according to FLL guidelines. |
OPTIGREEN VEGETATION MAT
- Pre-cultivated sedum mat for the rapid establishment of vegetation in order to prevent wind erosion, with decomposable carrier
- Download Data Sheet
Optigreen Low Density Substrate L 30 litres/m²
- Specially formulated substrate for single layer extensive roofs featuring low weight but high water storage capacity
- Download Data Sheet
OPTIGREEN INSPECTION CHAMBER LD
Optigreen Drainage and Water Storage Element FKD 25 (25 mm)
- Rapid discharge of surplus water
- Prevents accumulation of water on non-pitched roofs and on large drainage runs
- Good water storage capacity
- Download Data Sheet
OPTIGREEN PROTECTION AND STORAGE FLEECE RMS 300
- Protects the roof membrane against damage and stores water.
- Download Data Sheet
