Green Roof Infiltration

Use practices that do not require infiltration.

Green roof infiltration.

Green roofs are unique in that they have the ability to capture and retain a volume depth of rain from each rainstorm. This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value. This captured water is then evapotranspired back to the atmosphere through the green roof vegetation. Rainwater harvesting green roofs vegetated swales and.

Other practices designed for decreasing peak flow that do not require soils with high infiltration rates. Integrating a green roof into a historic building rehabilitation project may appear to be an easy solution to reducing the urban heat island effect improving storm water management and improving the energy efficiency and sustainability of the building. Green roofs can help reduce energy costsfor a building by acting as another layer of insulation between the inside and outside of the roof. A green roof will typically intercept the first 5mm and more of rainfall providing interception storage.

In fact a green roof replicates the natural landscape allowing water to infiltrate the vegetation substrates and engineered drainage layers of the green roof.