Extensive Green Roof Build Up

For a conventional roof.

Extensive green roof build up.

Therefore it is unlikely that a green roof will lead to issues with insurance. Basic types of green roofs. Noise reduction for the building green roofs have excellent acoustic qualities for both external sound up to 3db and internal noise up to 8db when constructing a green roof there are some fundemental considerations that determine the system required to support the planting scheme. Semi intensive green roofs as their name states are a combination of the aforementioned two types.

Extensive green roofs are generally made up of a very thin layer of soil or other planting medium with shallow root plants like sedum mosses and grasses. 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. Suitable plants include various sedum species herbs and some grasses. 15 to 50 per square foot.

8 to 20 per square foot. They are suitable for both existing and new build roof decks. Extensive landscaped roofs are an ecological alternative to conventional surface protection or ballast layers such as gravel and pavers. The soil is usually not more than 5 deep and is sometimes contained by a tray system which provides a barrier to excessive growth protects the roof membrane and also interlocks the.

Planting and waterproofing the build up heights and weights will be dependent upon the type of planting specified however as a rough guide 300 to 1500mm are the typical depths and weights could be in the region of. Extensive green roofs are a popular option for homeowners as they are lightweight and require very little maintenance with no need for additional watering. Xf301 sedum blanket extensive green roof system. In most instances an additional drainage layer is not required though on roofs up to 2 or in areas of high rainfall its inclusion may be necessary.

Suitable plants include various sedum species herbs and some. Extensive roofs are thin lightweight roof systems that typically have a planting media measuring 6 to 20 cm deep while heavier thicker green roofs are known as intensive roofs and their growing media ranges in thickness from 20 cm to 100 cm. Extensive green roofs normally have an attractive low layer of vegetation around 80 100mm high such as grass moss sedum or. Intensive green roof build ups over roofs and podiums are designed to be trafficked and should only be installed on flat roofs.

They are lightweight and have a shallow build up height. The system is suitable for both new build construction and retrofit refurbishment projects. 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.