Extensive Green Roofs

These roofs differ from each other in the thickness of the structure its weight and.

Extensive green roofs.

The substrate is usually an aggregate mixed with about 20 organic material. The vegetation layer consists of sedums and wildflowers. 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. 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.

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. 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 extensive green roofs generally have 80mm of substrate.

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. 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.

It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants. They fall into three main categories extensive intensive and semi intensive. The substrate sits on the green roof system filter sheet drainage layer protection layer. Although there are no precise definitions of.

Extensive green roofs substrate based green roofs. 15 to 50 per square foot. Difference extensive and intensive green roofs. Green roofs are also known as vegetative or eco 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. 8 to 20 per square foot. For a conventional roof.