Green roofs are also referred to as eco-roofs, vegetated roofs, living roofs, and greenroofs. A green roof is a roof of a building that is partially or completely covered with vegetation and soil, or a growing medium, planted over a waterproofing membrane.
This does not refer to roofs which are merely colored green, as with green shingles. It may also include additional layers such as a root barrier and drainage and irrigation systems.
Container gardens on roofs, where plants are maintained in pots, are not generally considered to be true green roofs, although this is an area of debate. The term "green roof" may also be used to indicate roofs that utilize some form of "green" technology, such as solar panels or a photovoltaic module.
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