Green Roof Intensive Vs Extensive

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.

Green roof intensive vs extensive.

The plants that are mostly used on extensively planted roofs include grasses mosses herbs and. The distinction is based on the kind of plant involved. An extensive green roof is characterized by a thinner layer of soil and smaller plants. These systems are ideal for efficient stormwater.

The green roof as a habitat. Planted roofs create living space for animal species. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. Our semi intensive green roof systems include a richer deeper substrate and drainage solution compared to extensive roofs enabling use of a wider range of complex plant mixtures.

Intensive includes a thick layer of soil that can support large vegetation such as small trees. Semi intensive roofs are generally used within highly visible area s to improve aesthetic design using small shrubs forbs and grasses. Intensive vs extensive a green roof comes in two varieties. It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.

There are two ways of planting a roof. 8 to 20 per square foot. For a conventional 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.

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. 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.