Intensive Vs Extensive Green Roofs

These can easily be installed on sheds and garages.

Intensive vs extensive green roofs.

Extensive green roofs. A green roof comes in two varieties. These systems are ideal for efficient stormwater. What is a green roof.

They fall into three main categories extensive intensive and semi intensive. Although there are no precise definitions of. These systems range in thickness from 2 6 94 and weigh approximately 15 30lbs per sq ft. For a conventional 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. Intensive planting there are two ways of planting a roof. The distinction is based on the kind of plant involved. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species.

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. 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. Due to their light weight and low profile they require less structural support and can be used on roofs with a slope of 30 b0 and higher.

The plants that are mostly used on extensively planted roofs include grasses mosses herbs and succulents. 15 to 50 per square foot. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. An extensive green roof is characterized by a thinner layer of soil and smaller plants.

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. Extensive green roof systems extensive systems are simpler and lighter weight than intensive systems.

Intensive includes a thick layer of soil that can support large vegetation such as small trees. It should be clear from the above which green roof type is best for you. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. If you are looking for a low maintenance lightweight green roof that features simple and self maintaining vegetation then the extensive green roof is for you.