What is a "green roof"?

A "green roof" refers to a roof that is intentionally covered with vegetation, which serves multiple environmental and practical purposes. The primary benefits include improving insulation for the building, which can lead to reduced energy costs and increased comfort. Furthermore, this setup effectively manages stormwater runoff, as the plants can absorb and filter rainwater, reducing the burden on drainage systems and minimizing the risk of flooding.

The vegetation also contributes to improved air quality and biodiversity within urban areas, providing habitat for various species and enhancing the aesthetic value of a building. By incorporating living plants, green roofs can mitigate the urban heat island effect, making cities cooler and more sustainable. Thus, the essential features of a green roof are its plant cover and the associated environmental benefits.