Intensive Vs Extensive Green Roofs

Green roofs are also known as vegetative or eco roofs.

Intensive vs extensive green roofs.

15 to 50 per square foot. They fall into three main categories extensive intensive and semi intensive. What is a green 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.

It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. Intensive includes a thick layer of soil that can support large vegetation such as small trees. The distinction is based on the kind of plant involved.

It should be clear from the above which green roof type is best for you. Extensive green roofs. These systems range in thickness from 2 6 94 and weigh approximately 15 30lbs per sq ft. Although there are no precise definitions of.

For a conventional roof. 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. These can easily be installed on sheds and garages.

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. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. 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. 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.

Intensive planting there are two ways of planting a roof. A green roof comes in two varieties. 1 extensive vegetative roofs which are 6 inches or shallower and are frequently designed to satisfy specific engineering and performance goals and 2 intensive vegetative roofs which may become quite deep and merge into more familiar on structure plaza landscapes with promenades lawn large perennial plants and trees. Extensive green roof systems extensive systems are simpler and lighter weight than intensive systems.

The plants that are mostly used on extensively planted roofs include grasses mosses herbs and succulents. 8 to 20 per square foot. An extensive green roof is characterized by a thinner layer of soil and smaller plants. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs.