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[[File:Pass Filter Bed green roof.PNG|400px|thumb|right|Fully constructed green roof.]]
[[File:Pass Filter Bed green roof.PNG|500px|thumb|right|Fully constructed green roof.]]
=Overview=
=Overview=
[[Green roofs]] are composed of several layers (waterproof membrane or existing membrane, root barrier, drainage layer, filter fabric, growing medium) that support the growth of plants and other vegetation on top of a roof. Growing medium depth determines which plants can be planted, and the components of green roofs can either be loose-laid or fused together. The proper installation of green roofs can help to achieve water balance targets, promote biodiversity and provide green space. Some key resources for green roof construction include the following:
[[Green roofs]] are composed of several layers (waterproof membrane or existing membrane, root barrier, drainage layer, filter fabric, growing medium) that support the growth of plants and other vegetation on top of a roof. Growing medium depth determines which plants can be planted, and the components of green roofs can either be loose-laid or fused together. The proper installation of green roofs can help to achieve water balance targets, promote biodiversity and provide green space. Some key resources for green roof construction include the following: