Therefore it is unlikely that a green roof will lead to issues with insurance.
Extensive green roof construction details.
Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.
Al 2008 urban ecosystems vol.
Please contact us for support in determining which details are most pertinent to your individual project.
The government undertook fire tests for green roofs and walls and concluded that the current guidance provided by the green roof code was adequate and extensive green roofs installed following the code would not be deemed a fire risk.
With only a few inches of soil extensive green roofs typically support plants that are tolerant of high heat drought wind and frost like sedums succulents and.
The hydrologic and thermal performance of six different extensive green roofs and reflective and non reflective roofs in a sub tropical climate simmons et.
Extensive green roofs are generally lower in weight and cost and require less plant maintenance.
For both of these we need to follow specific green roof construction and maintenance procedures.
Unlike conventional earth covered structures garden roof assemblies are lightweight and can be installed on a wide variety of new and existing structures.
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.
Generally there are two types of green roof systems.
Green roofs are not created equal.
A 2006 study by the university of michigan comparing costs of conventional and green roofs showed that on average installing a green roof costs about 22 00 sq.
In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs.
For a conventional roof.
8 to 20 per square foot.
This system requires some maintenance from time to time these green roof systems lie between the extensive and the intensive and usually include a mix of plant types.
15 to 50 per square foot.
These systems are ideal for efficient stormwater.
Replacing the impervious surface of a conventional roof with.
A general characterization of the two types of green roofing systems follows.
Garden roof assembly american hydrotech inc.
We have vegetative roof details in pdf dwg autocad and autodesk revit rvt 2d and rfa 3d formats.
As a roof type that requires frequent maintenance intensive systems can be thought of as gardens on a roof in contrast with an extensive green roof there are almost unlimited possibilities.
