A typical growing medium depth of an intensive green roof is 6 inches or more.
Intensive green roof section.
An intensive green roof is a deeper typically greater than six inches heavier system designed to sustain complex landscapes.
A green roof is a layer of vegetation planted over a waterproofing system that is installed on top of a flat or slightly sloped roof.
They fall into three main categories extensive intensive and semi intensive.
This deeper soil allows intensive roofs to accommodate large plants and dramatic plant groupings.
Another term for these green roofs is rooftop garden.
Intensive systems allow the designer to create a park like setting so they are the best option for roof gardens that will be occupied.
Green roofs are also known as vegetative or eco roofs.
Intensive green roof garden roof roof garden an intensive green roof system is characterized by its variety of vegetation ranging from herbaceous plants to small trees with professionel maintenance and advanced green roof irrigation systems.
Although there are no precise definitions of them an extensive green roof has a shallow growing medium usually less than six inches with a modest roof load limited plant diversity minimal.
Note that it is not like a traditional roof garden in which planting is done in free standing containers as well as planters that are placed on an easy to access roof terrace.
Extensive green roofs 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 weight of an intensive green roof system is critical for a particular type of plant and the minimum intensive green roof thickness should ranges from 150mm for a wild grassland 300mm for bushes and 3 meters in height and at least 400mm upper substrate and 250 mm lower substrate for small trees of approximately 10 meters.
For intensive green roof profiles a drain restrictor may be used to retain water in the base of the profile for subsequent plant transpiration.
Planting and waterproofing the build up heights and weights will be dependent upon the type of planting specified however as a rough guide 300 to 1500mm are the typical depths and weights could be in the region of 400kg to over a tonne per sqm.
A green roof is a green space that is created by adding various layers of plants and a growing medium to the top portion of a traditional roofing system.
Intensive green roofs require the deepest soil and have the greatest impact on the structural design but they also accommodate all types of plantings including large shrubs and trees.
The growing medium depth for an extensive green roof system is typically 6 inches or less.
