Pitched roof 5-25°
The structure of a shallow pitched green roof differs slightly from the structure of a flat roof. Because water runs off the roof more quickly, a thicker substrate layer is needed. The substrate gives the correct dose of nutrition to the plants and so ensures your green roof is indeed green.
Shallow pitched green roof 5-25° specifications
Pitch: 5-25°
System structure thickness including Sedum: 90-120 mm
Saturated weight: 95-100 kg/m2
System structure
1 Sempergreen Sedum-mix blanket 30 mm
Pre-cultivated Sedum-mix blanket, consisting of a mix of 6 to 8 different types of Sedum. Vegetation percentage on delivery: at least 95%.
2 Roof garden substrate extensive 50 mm
Extensive roof garden substrate consisting of lava, pumice, and compost.
Produced in accordance with FLL guidelines.
3 Drainage including filterfleece 10-40 mm
The thickness of the drainage layer will depend on the roof structure and the water storage capacity required, depending on the climate.