Water-retaining green roof Extensive Extreme
Roof pitch
0–5°
Variant for roofs loaded with high rainfall totals. The advantage of the composition is the excellent ability of rainwater retention, quick installation and immediate functional and aesthetic effect.
- Increased drainage capacity
- Immediately after implementation, the vegetation layer covers the full surface
- A wide offer of system accessories
- Irrigation is not required
- Logistic and technical support
Technical specifications
Vegetation form
a sedum mat
Weight of the fully saturated composition
154 kg/m²
Installation height
162 mm
Retention capacity* up to
90%
Water capacity*: minimum
32 l/m²
Drainage coefficient*
C = max. 0,45
* with artificial rainfall pursuant to FLL (a 15-minute rain)

Structure description
- A sedum mat
30 mm - Extensive substrate
80 mm - EnviBoard 30 hybrid board
30 mm - Drainage layer
17 mm - Separation and protection layer
5 mm
Other Envilope Roof System solutions
Select your perfect solution that meets your expectations on structure as well as on technical aspects of a building.
Do you need help?
Send us your email address
and we will get back to you.