Light and fairly thin the plant system can be established on any type of support such as wood or steel.
Extensive roof planting.
They can be created for example on a gently sloping shed roof by building a grid of wooden cells on top of the roof and filling the cells with compost.
This deeper soil allows intensive roofs to accommodate large plants and dramatic plant groupings.
It is also important to be aware that a separate microclimate with strong winds and extreme temperatures can sometimes exist at roof level of high rise buildings.
The selected group of plants requires very little maintenance and develops into a stable ecosystem.
Comes a desire to have greater plant diver sity so that the green roof functions on an environmental level as well as provides a pleasing landscape.
Green roofs are classi cally described by the depth of the growing medium extensive semi intensive and intensive.
Recommended plant types for extensive roofs need to be drought wind and frost resistant such as self generating sedums.
There are two ways of planting a roof.
The plants that are mostly used on extensively planted roofs include grasses mosses herbs and succulents.
It also allows for a formal garden to be installed with paths grass lawn and flowers or pot plants.
Install a protective drainage and filter layer in a single step.
These need 10 20cm 4 8in depth of growing medium enough to support perennials but not shrubs and trees.
Complex roof planting scheme with bauder wsp 50 water storage panel extensive ex 2 cost effective roof planting with bauder sdf mat.
The plants chosen must be appropriate for the roof type extensive intensive or semi intensive.
Extensive green roofs have a growing depth of 3 to 6 inches and are typ.
Another term for these green roofs is rooftop garden intensive green roofs require more maintenance because of the plant varieties they.
Extensive roofs only require a shallow growing media depth generally as little as 3 6 depending on the region and therefore add little weight to the roof structure below when compared to a standard ballasted pmr roof.
A semi intensive green roof can give rise to a richer ecology with more diverse plant and animal species.
Climate clearly plays a major role in choosing the best plants for a green roof.
The distinction is based on the kind of plant involved.
Plant selection for stormwater management.
The intensive green roof uses planting mediums that have greater depth than the extensive green roof.
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.
If a roof is designed to soak up water and remove contaminants in the water during storm events species that use water effectively and that accumulate nutrients should be explored.
