Lightweight
Sometimes a flat roof support structure requires a lightweight green roof. This special lightweight structure for flat roofs transforms your grey roof, with a pitch of 0 to 15 degrees, into a sustainable green roof almost instantly. Read more about the specifications of this lightweight solution here.
Lightweight roof 0-15° specifications
Pitch: 0-15°
System structure thickness including Sedum: 61-70 mm
Saturated weight: 45-55 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 Substrate roll 20 mm
Substrate roll is a lightweight green roof substrate, manufactured from long mineral wool fibres. It is a good growing medium and ensures good water absorption and tenacity.
3 Drainage including filterfleece 11-20 mm
The thickness of the drainage layer will depend on the roof structure and the water storage capacity required, depending on the climate.