Green Roof Media Depth

Growing media of green roof should be designed properly to achieve the multiple benefits for longer periods.

Green roof media depth.

Extensive green roof media limited plant selection available. Before the growing media is selected there are other layers of the green roof system which play major roles in the functionality of the roof. There are two variations for the system build up. When designing a green roof there are several factors to take into consideration.

The shallow soil depth of extensive green roofs severely limits water storage capacity adding to what is already an extreme environment for the plants. The growing media needed to facilitate a healthy green roof will be determined by the type of vegetative growth. Rowemedia depth influences sedum green roof establishment. They may include a granular drainage medium multi course or a synthetic drainage layer multi layer.

This includes but. This is reflected in the relatively short list of plants that are suitable for planting extensive green roofs. The second study tested the influence of roof slope 2 and 6 5 and green roof media depth 2 5 4 0 and 6 0 cm on stormwater retention. Green roof growing media is an integral part of a functioning.

Green roofs or living roofs have become popular over the years. There are a few different types of green roofs available in order to best meet your growing needs learn more about them here. Each type of plant will require different growing medium maintenance and local conditions to sustainable growth. For all combined rain events platforms at 2 slope with a 4 cm media depth had the greatest mean retention 87 although the difference from the other treatments was minimal.

The most popular type of green roof sedum roofs are extensive green roofs that have a total depth of 3 to 8 inches. Soil structure for green roof media. There is of course more to tell about growing media. These generally require a 5 15cm 2 6in depth of growing medium that can consist mainly of lightweight inorganic materials such as perlite leca sand rockwool and crushed tiles or concrete.

Sedum roofs are extensive green roofs that have a media depth of 3 8 inches. This is because they provide ecological benefits aesthetic value and creative urban architecture. An ideal growing media can have the following properties. Sedum roofs with a natural drainage layer are designed to maximize water retention while sedum roofs with a synthetic drainage layer may focus more on minimizing weight.

To better understand the full use of a green roof system we have broken down the layers here. Types of green roofs. Green roof professional regional academic centers of excellence resources.