Extensive Vs Intensive Green Roof

With more depth of growing substrate 100 200 mm it can support a greater diversity of plants but not shrubs and trees.

Extensive vs intensive green roof.

For a conventional roof. Semi intensive roofs are generally used within highly visible area s to improve aesthetic design using small shrubs forbs and grasses. Intensive green roofs are the heavy weights literally of the green roof world. To bear this weight an expensive custom support structure is required.

Semi extensive green roof. Planted roofs create living space for animal species. A semi extensive green roof sits somewhere in between the two main options and is based on the extensive roof principles. 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. The distinction is based on the kind of plant involved. In essence they are parks or gardens on roofs. Le jardin de toit paris intensive green roofs maintenance rooftop garden allen overy london.

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 includes a thick layer of soil that can support large vegetation such as small trees. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs. The green roof as a habitat.

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 word intensive actually refers to the amount of input required to maintain a green roof. There are two ways of planting a roof. 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.

15 to 50 per square foot. An extensive green roof is characterized by a thinner layer of soil and smaller plants. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. 8 to 20 per square foot.

The plants that are mostly used on extensively planted roofs include grasses mosses herbs and. Intensive vs extensive green roof.