Green roofs are unique in that they have the ability to capture and retain a volume depth of rain from each rainstorm.
Green roof infiltration.
Many jurisdictions now require building owners to collect stormwater in infiltration basins that clean and slowly release the water back into the ground to help reduce the burden on the sewer systems green roofs help do this naturally without the need for special infiltration basins or equipment.
Green roofs also referred to as vegetated roofs eco roofs and roof gardens consist of a layer of vegetation that covers an otherwise conventional flat or moderately pitched roof.
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Research at penn state has shown that green roofs provide considerable reduction in the volume of stormwater leaving a developed site and they reduce the peak rates of runoff.
Greening solution rainwater drainage system green roofs.