Extensive Green Roofs

It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.

Extensive green roofs.

What is a green roof. These extensive green roofs generally have 80mm of substrate. 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 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.

Although there are no precise definitions of. Difference extensive and intensive green roofs. The substrate sits on the green roof system filter sheet drainage layer protection layer. These roofs differ from each other in the thickness of the structure its weight and.

For a conventional roof. An extensive green roof is a lightweight low maintenance option that typically does not require irrigation and consists primarily of sedum. They fall into three main categories extensive intensive and semi intensive. These systems are ideal for efficient stormwater.

A properly designed and installed extensive green roof system can cost 108 248 m 2 10 23 sq ft while an intensive green roof costs 355 2 368 m 2 33 220 sq ft however since most of the materials used to build the green roof can be salvaged it is estimated that the cost of replacing a green roof is generally one third of the initial installation costs. Extensive green roofs. 15 to 50 per square foot. 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.

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 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. 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. Green roofs are also known as vegetative or eco roofs.

What is the difference between an extensive and intensive green roof. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. The vegetation layer consists of sedums and wildflowers.