There are two types of green roof.
Green roof substrate depth.
Extensive green roof substrates are for use on shallow green roof systems 200mm depth and are often associated with sedum mat sedum plug plant or wildflower planting.
This is referred to as the saturated bulk density.
Careful plant selection and maintenance is needed to ensure annuals do not become weeds on a green roof.
Have a known saturated weight loading that forms part of the structural load capacity of the roof.
Crucial for the adoption and installation of the systems.
Semi extensive 100 200 mm.
Continued research the swedish green roof market is currently undergoing a change towards an increased.
Intensive green roof substrates are engineered to suit larger vegetation such as shrubs and trees.
Some green roofs are constructed specifically to support sports turf.
Vegetables are the other main group of annual plants used on green roofs.
Extensive 25 100mm.
The depth varies depending on the type of roof you are constructing.
These require irrigation and a substrate depth of at least 200 mm.
We have investigated green roof meadows installed with 3 different substrate depths 50 75 100 125 mm and using two different substrates.