Green Roof Substrate Depth

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.

Green roof substrate depth.

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. Some green roofs are constructed specifically to support sports turf. Extensive 25 100mm. Crucial for the adoption and installation of the systems.

Vegetables are the other main group of annual plants used on green roofs. The depth varies depending on the type of roof you are constructing. Semi extensive 100 200 mm. We have investigated green roof meadows installed with 3 different substrate depths 50 75 100 125 mm and using two different substrates.

This is referred to as the saturated bulk density. 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. 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.

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.