Extensive Vs Intensive Green Roof

To bear this weight an expensive custom support structure is required.

Extensive vs intensive green roof.

Planted roofs create living space for animal species. 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. Semi extensive green roof.

A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. In essence they are parks or gardens on roofs. Le jardin de toit paris intensive green roofs maintenance rooftop garden allen overy london. A semi extensive green roof sits somewhere in between the two main options and is based on the extensive roof principles.

The depth of an intensive green roof ranges from 15 cm to as much as 150 cm and can easily weigh as much 300 to more than 1500 kg m2. Intensive green roofs are the heavy weights literally of the green roof world. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. The distinction is based on the kind of plant involved.

The plants that are mostly used on extensively planted roofs include grasses mosses herbs and. 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. The green roof as a habitat. Intensive includes a thick layer of soil that can support large vegetation such as small trees.

8 to 20 per square foot. 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. An extensive green roof is characterized by a thinner layer of soil and smaller plants. For a conventional roof.

In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. 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. Intensive vs extensive a green roof comes in two varieties. With more depth of growing substrate 100 200 mm it can support a greater diversity of plants but not shrubs and trees.

15 to 50 per square foot. Semi intensive roofs are generally used within highly visible area s to improve aesthetic design using small shrubs forbs and grasses.