What is a green roof?
Q: What is a green roof?
A: A green roof is a roof of a building covered with plants that may include layers such as a root barrier and drainage and irrigation systems.
Q: What is the difference between a green roof and container gardens on roofs?
A: Container gardens on roofs, where plants are in pots, are not generally considered true green roofs. However, this is debated.
Q: What are rooftop ponds?
A: Rooftop ponds are another type of green roof which are used to treat greywater.
Q: What components make up a green roof?
A: Vegetation, soil, drainage layer, roof barrier, and irrigation system make up a green roof.
Q: What are the reasons why a building may have a green roof?
A: The reasons why a building may have a green roof include absorbing rainwater, providing insulation, creating a habitat for wildlife, increasing benevolence and decreasing stress of the people around the roof, and helping to lower urban air temperatures and go against the heat island effect.
Q: Can green roofs be added on old buildings?
A: Yes, green roofs can be added on old buildings as well as new buildings.
Q: How many types of green roofs are there?
A: There are two types of green roofs.
