Extensive Green Roof Definition

They fall into three main categories extensive intensive and semi intensive.

Extensive green roof definition.

What is the difference between an extensive and intensive green roof. A green roof is a flat roof that may be systematically planted with for example varieties of sedum moss or grass but also with perennials and even bushes and trees. Difference extensive and intensive green roofs. 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.

For a conventional roof. 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. 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. These roofs differ from each other in the thickness of the structure its weight and.

What is a green roof. A green roof has many advantages. An extensive green roof is a lightweight low maintenance option that typically does not require irrigation and consists primarily of sedum. 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.

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. Although there are no precise definitions of. 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. These systems are ideal for efficient stormwater.

15 to 50 per square foot. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants. 8 to 20 per square foot.

Green roofs are also known as vegetative or eco roofs.