Extensive Green Roofs

Extensive green roofs.

Extensive green roofs.

Difference extensive and intensive green roofs. 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. An extensive green roof is a lightweight low maintenance option that typically does not require irrigation and consists primarily of sedum. Extensive green roofs substrate based green roofs.

These extensive green roofs generally have 80mm of substrate. The substrate is usually an aggregate mixed with about 20 organic material. These roofs differ from each other in the thickness of the structure its weight and. For a conventional roof.

It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. 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. The vegetation layer consists of sedums and wildflowers.

The substrate sits on the green roof system filter sheet drainage layer protection layer. Although there are no precise definitions of. 15 to 50 per square foot. 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.

These systems are ideal for efficient stormwater. 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. 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. They fall into three main categories extensive intensive and semi intensive.

What is a green roof. What is the difference between an extensive and intensive green 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.