Green Roof Substrate Depth

Extensive 25 100mm.

Green roof substrate depth.

The depth varies depending on the type of roof you are constructing. Careful plant selection and maintenance is needed to ensure annuals do not become weeds on a green roof. There are two types of green roof. 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. The physical and chemical properties of the substrate mix together with its depth and total volume influences what vegetation can be supported on the green roof. Have a known saturated weight loading that forms part of the structural load capacity of the roof. 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 and require minimal maintenance.

These require irrigation and a substrate depth of at least 200 mm. Continued research the swedish green roof market is currently undergoing a change towards an increased. Semi extensive 100 200 mm. This is referred to as the saturated bulk density.

Crucial for the adoption and installation of the systems. The green roof design needs to accommodate adequate water retention suitable drainage structural loading and the depth of green roof growing substrate.