Extensive green roof at Fildorado, Filderstadt, Germany © Optigroen
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 ◼◼◼← more about this theme
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Heat ◼◼◼← more about this theme
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Biodiversity ◼◼← more about this theme
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Air quality ◼← more about this theme
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Energy ◼◼← more about this theme
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Multifunctional space usage ◼◼
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Costs ◼◼
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© Optigroen
1 vegetation
2 substrate
3 filter mat
4-5 drainage layer
6 flow regulation
7 protection mat