Green roofs are gaining acceptance in dozens of countries, joining other forms of green infrastructure that are being used to mitigate environmental problems of urban centers.
For example, vegetated roofs “are very good at managing stormwater. Most extensively planted green roofs will hold the first inch of rainfall and slow any additional rainfall, thus reducing peak flows and lowering the stress on combined sewer overflows,” says Steven Peck, founder and president of Green Roofs for Healthy Cities (CRHC).