
Retention roof
Data
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Weight:from 120-180 kg/m²
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Depth:12 cm
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Roof pitch:0-5° (0-9%)
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Vegetation form:herbs / grasses / sedum
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Water retention:≥ 80%
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Discharge coefficient:≤ 0.2
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Water storage:approx. 25 l/m²
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Water: 3
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Heat: 2
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Biodiversity: 1
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Air quality: 1
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Energy: 2
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Multifunctional space usage: 2
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Costs: 2
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1 vegetation
2 substrate
3 filter mat
4-5 drainage layer
6 flow regulation
7 protection mat