What is a green roof?

A green roof is characterized by its vegetation-covered design, which provides various environmental benefits. This type of roofing system incorporates a layer of soil and plants on top of a conventional roof structure, effectively creating a living environment.

Green roofs help to regulate building temperatures, reduce stormwater runoff, improve air quality by filtering pollutants, and promote biodiversity by providing habitats for urban wildlife. They also contribute to energy efficiency by insulating the building and can enhance aesthetic appeal, contributing to the overall landscaping of urban areas.

The other options describe different types of roofs or their functionalities, but they do not accurately capture the specific essence of a green roof, which fundamentally revolves around the integration of plant life into the roofing system.