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.
Extensive green roof depth.
Tray systems are not a viable option for intensive roofs due to the weight.
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.
Although there are no precise definitions of.
Along with the makeup and depth of the growing medium selecting the right plants is crucial to the success of a green roof.
Extensive green roofs are designed to be low maintenance lightweight systems with no general access.
Therefor a significant amount of attention must be paid to the various.
The intensive green roof uses planting mediums that have greater depth than the extensive green roof.
Intensive vs extensive green roof.
The most popular type of green roof sedum roofs are extensive green roofs that have a total depth of 3 to 8 inches.
Intensive roofs which are thicker with a minimum depth of 12 8 cm 5 1 16 in and can support a wider variety of plants but are heavier and require more maintenance and extensive roofs which are shallow ranging in depth from 2 cm 13 16 in to 12 7 cm 5 in lighter than intensive green roofs.
Extensive green roofs.
Climate clearly plays a major role in choosing the best plants for a green roof.
They fall into three main categories extensive intensive and semi intensive.
These systems are ideal for efficient stormwater.
Plants for green roofs.
Another term for these green roofs is rooftop garden intensive green roofs require more maintenance because of the plant varieties they.
Green roofs are also known as vegetative or eco roofs.
They may include a granular drainage medium multi course or a synthetic drainage layer multi layer.
With more depth of growing substrate 100 200 mm it can support a greater diversity of plants but not shrubs and trees.
Typically they have thin layers of substrate the growing medium to keep depth and weight to a minimum.
Semi extensive green roof.
There are two types of green roof.
Extensive green roofs sedum roof systems.
Intensive green roofs weigh from 35 pounds to beyond 100 pounds per square foot when dry it is all a matter of the soil depth which is affected by the amount of mounding that is used.
The plants chosen must be appropriate for the roof type extensive intensive or semi intensive.
A semi extensive green roof sits somewhere in between the two main options and is based on the extensive roof principles.
