50 - 80% of rainfall in summer
up to 20% of precipitation in winter
A substrate properly selected for a multi-layer extensive structure, characterized by high water and air capacity.
It prevents the settling of fine floatable particles in the drainage layer. It has high water permeability parameters.
It stores water and quickly gets rid of its excess.
It protects the waterproofing of the roof against damage and stores water.
Thin separation and protection film made of recycled polyethylene.
Wood-based construction and building board
Weight* | from 90 kg/m² or 0,9 kN/m² |
Layer height | 8 cm |
Roof slope | 0 - 5° (0 - 9%) |
Vegetation | perennials-grasses-sedums |
Retention | 50 - 60% |
Runoff factor** | Cs = 0,5 |
Water storage | approx. 25 l/m² |
Ecological value | |
Care workload |
* Weight data refers to the water-saturated state, of which 50 - 60% is the dry weight of the substrate.
** Calculated for 0 and 2% roof slopes based on the FLL procedure
Weight* | from 90 kg/m² or 0,9 kN/m² |
Layer height | 8 cm |
Roof slope | 0 - 5° (0 - 9%) |
Vegetation | perennials-grasses-sedums |
Retention | 50 - 60% |
Runoff factor** | Cs = 0,5 |
Water storage | approx. 25 l/m² |
Ecological value | |
Care workload |
* Weight data refers to the water-saturated state, of which 50 - 60% is the dry weight of the substrate.
** Calculated for 0 and 2% roof slopes based on the FLL procedure