There are three main types of green roofs which are characterized by the types of planting and vegetation that can be placed on them.
Green roof slope design.
Insects spiders snails birds and rodents rats mice squirrels all promote damage to the.
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Green roof design by roofmeadow.
Green roofs are now feasible in sloped applications with hydrotech s gardnet option a growing media confinement component within the garden roof assembly.
While the basic components of a sloped green roof are similar to that of a flat system building teams must pay particular attention to water management erosion control.
Gardnet allows design professionals to expand beyond traditional flat roof applications and put a green roof in places they never could before.
Sloped roofs retain less water in general and the moisture content varies from the ridge to the eave lowest edge of the roof.
Pitched green roof design considerations.
Green roofs are suitable for any pitch of roof.
The pitch of the structure shouldn t be too steep as flat or shallower roofs adapt better to a green roof.
However when dealing with a sloped green roof with a pitch of more than 9 5 you ll need a design solution for retaining water and ensuring the substrate stays in place.
While extensive green roofs require less maintenance than intensive roofs there are still routine cleaning and clearing that needs to be done.
There is no steepest pitch for a green roof they can even grow vertically.
This is not desirable on an extensive vegetative roof which is not designed to support these habitats.
There are many green roof suppliers and manufacturers to choose from when considering your design.
Drainage thickness of growing media plant varieties etc.
The main thing is to speak to a structural engineer to know if the roof can support the weight of the green layer because once it s absorbed rainwater it can get very heavy.
One important item to design for is an increased structural load.
As the popularity of vegetated roofs grows in the u s building teams are finding new methods for greening rooftops.
There are a number of things to consider when designing for a green roof.
Intensive style green roofs are the most detailed and strongest of them all.
Green roofs are also divided into different types depending on the green roof design scheme.
Vegetative roofs will attract wildlife.
This is especially true of intensive green roofs which can have soil that is two feet deep or more.
Green building council s leadership in energy and environmental design leed green building rating system awards points for environmentally friendly construction features.
Additionally contractors and building owners earn leed points for using building materials that incorporate recycled content materials.
Roof access usually comes in the form of hatches ladder points or full roof containment.
