A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species.
Green roof intensive vs extensive.
8 to 20 per square foot.
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.
In addition to the mosses grasses and sedum of extensive roofs semi intensive plantings include herbs flowering plants taller grasses and small shrubs.
It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.
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.
These systems are ideal for efficient stormwater.
Planted roofs create living space for animal species.
Extensive green roofs.
For a conventional roof.
An extensive green roof is characterized by a thinner layer of soil and smaller plants.
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.
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.
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.
15 to 50 per square foot.
There are two ways of planting a roof.
The plants that are mostly used on extensively planted roofs include grasses mosses herbs and.
Intensive vs extensive a green roof comes in two varieties.
The green roof as a habitat.