Extensive Green Roof Construction Details

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 roof construction details.

Unlike conventional earth covered structures garden roof assemblies are lightweight and can be installed on a wide variety of new and existing structures. 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. Generally there are two types of green roof systems. These systems are ideal for efficient stormwater.

We have vegetative roof details in pdf dwg autocad and autodesk revit rvt 2d and rfa 3d formats. 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. Green roofs are not created equal. Extensive green roofs.

Replacing the impervious surface of a conventional roof with. Therefore it is unlikely that a green roof will lead to issues with insurance. 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. Please contact us for support in determining which details are most pertinent to your individual project.

They are differentiated on the basis of plant selection growing medium type and overall cost. 15 to 50 per square foot. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used.

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. Extensive green roofs are generally lower in weight and cost and require less plant maintenance. 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. For a conventional roof.

For both of these we need to follow specific green roof construction and maintenance procedures. Al 2008 urban ecosystems vol. 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. Garden roof assembly american hydrotech inc.