Green Roof Substrate Depth

Some green roofs are constructed specifically to support sports turf.

Green roof substrate depth.

This is referred to as the saturated bulk density. Vegetables are the other main group of annual plants used on green roofs. These require irrigation and a substrate depth of at least 200 mm. Intensive green roof substrates are engineered to suit larger vegetation such as shrubs and trees.

There are two types of green roof. Have a known saturated weight loading that forms part of the structural load capacity of the roof. Semi extensive 100 200 mm. 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.

The depth varies depending on the type of roof you are constructing. 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. The green roof design needs to accommodate adequate water retention suitable drainage structural loading and the depth of green roof growing substrate. 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.

Crucial for the adoption and installation of the systems. Extensive 25 100mm.