Two types of green roof exist.
Green roof in section.
There are two types of green roof.
The layers of a green roof must like any roof accommodate drainage and protect the building from the elements with a waterproof membrane.
Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs and require minimal maintenance.
The following projects showcase green roof design in section revealing building wide formal moves and up close detailing.
Note that it is not like a traditional roof garden in which planting is done in free standing containers as well as planters that are placed on an easy to access roof terrace.
Creating a green roof.
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Green roofs can help reduce energy costsfor a building by acting as another layer of insulation between the inside and outside of the roof.
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Green roofs are also known as vegetative or eco roofs.
Extensive green roof an extensive green roof system is characterized of its vegetation ranging from sedums to small grasses herbs and flowering herbaceous plants which need little maintenance and no permanent irrigation system.
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The growing medium depth for an extensive green roof system is typically 6 inches or less.
This is most noticeable in intensive green roofs since there is a thicker and more consistent layer of soil which provides a higher insulating value.
Free cad drawing download of green roof sections for use in architectural detail design cad drawings.
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But they also must create a growing area and potentially provide support irrigation and root protection barriers while staying as light as possible.
These systems help mitigate the heat island effect create habitats filter pollutants sequester carbon and can increase agricultural and amenity space.
A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof.
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