Extensive Green Roof Definition

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.

Extensive green roof definition. A vegetated landscape built up from a series of layers that are installed on a roof surface as loose laid or modular that is installed layer by layer on the roof or as pre prepared layers in trays green roofs are constructed for multiple reasons as spaces for people to use as architectural features to add. Difference extensive and intensive green roofs. 15 to 50 per square foot. What is the difference between an extensive and intensive 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. 8 to 20 per square foot. Extensive green roofs. What is a green roof.

For a conventional roof. It improves the appearance of a building and in big cities especially it serves as a substitute garden thus boosting the residential value. These roofs differ from each other in the thickness of the structure its weight and. Typically these roofs will have more soil and some small shrubs as well as the low growing wildflowers and sedums found on an extensive roof.

Although there are no precise definitions of. 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. Green roofs are also known as vegetative or eco roofs. They fall into three main categories extensive intensive and semi intensive.

A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. A green roof has many advantages. 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. An extensive green roof is a lightweight low maintenance option that typically does not require irrigation and consists primarily of sedum.

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.