A green roof is a roof of a building that is partially or completely covered with vegetation and a growing medium, planted over a waterproofing membrane. It may also include additional layers such as a root barrier, drainage, irrigation systems and PIR roof insulation.
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Also known as “living roofs”, these serve several purposes for a building, such as absorbing rainwater, providing insulation, creating a habitat for wildlife, and helping to lower urban air temperatures and combat the heat island effect. There are two types of green roofs: intensive roofs, which are thicker and can support a wider variety of plants, and extensive roofs, which are covered in a light layer of vegetation and are lighter than an intensive green roof. 

Green (or living) roofs have many benefits aside from just looking good. Creating a natural habitat, green roofs can give more agricultural space and filters pollutants and carbon dioxide out of the air. There’s a reduction in storm water run-off as the roof will absorb it and can reduce cooling loads by 50-90% and reduces heating.

Living roofs have a dramatically increased lifespan in comparison to other roofing types and adds value to real estate. The material helps prevent heat escaping the property therefore saving on heating costs too.

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