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.
Green roof in section.
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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.
There are two types of green roof.
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.
The growing medium depth for an extensive green roof system is typically 6 inches or less.
The layers of a green roof must like any roof accommodate drainage and protect the building from the elements with a waterproof membrane.
Jul 4 2020 explore danica mihadavid s board green roof sections on pinterest.
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These systems help mitigate the heat island effect create habitats filter pollutants sequester carbon and can increase agricultural and amenity space.
Creating a green roof.
They fall into three main categories extensive intensive and semi intensive.
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.
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.
Green roofs are also known as vegetative or eco roofs.
The following projects showcase green roof design in section revealing building wide formal moves and up close detailing.
But they also must create a growing area and potentially provide support irrigation and root protection barriers while staying as light as possible.
Two types of green roof exist.