Intensive Vs Extensive Green Roof

You can compare an intensive roof to a normal garden and this is why an intensive green roof is also known as a roof garden or garden roof.

Intensive vs extensive green roof.

A green roof comes in two varieties. 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 systems extensive systems are simpler and lighter weight than intensive systems. In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs.

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. 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. Intensive vs extensive green roof.

Roughly speaking extensive green roofs have a thickness of between 4 and 15 cm and a weight of between 30 and 220 kg m2. 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. An extensive green roof is characterized by a thinner layer of soil and smaller plants.

For a conventional roof. Semi intensive green roofs require a deeper soil layer but the payoff is in the types of plantings that can be used. The plants that are mostly used on extensively planted roofs include grasses mosses herbs and succulents. 8 to 20 per square foot.

These systems range in thickness from 2 6 94 and weigh approximately 15 30lbs per sq ft. These can easily be installed on sheds and garages. A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species. It should be clear from the above which green roof type is best for you.

15 to 50 per square foot.