Water-retaining green roof Extensive Universal
Roof pitch
2–5°
Universal variant for most of the Czech Republic territory. The advantage of the composition is its wide use, very fast installation and immediate functional and aesthetic effect.
- Reliable vegetation composition
- Easy to implement composition
- Immediately after implementation, the vegetation layer covers the full surface
- Possible use of system accessories
- Irrigation is not required
Technical specifications
Vegetation form
a sedum mat
Weight of the fully saturated composition
114 kg/m²
Installation height
115 mm
Retention capacity* up to
74%
Water capacity*: minimum
20 l/m²
Drainage coefficient*
C = max. 0,4
* with artificial rainfall pursuant to FLL (a 15-minute rain)

Structure description
- A sedum mat
30 mm - Extensive substrate
60 mm - EnviBoard 20 hybrid board
20 mm - Separation and protection layer
5 mm“
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