Green Roof Medium

The extensive green roof lightweight cost effective and probably the most popular of the green roofs.

Green roof medium.

The foot or more of growing medium needed for an intensive green roof creates a load of 80 150 pounds 36 68 kilograms per square foot. Soil tests are integral part of the process and. It should have good consistent drainage and aeration with a structure that enables it to hold water. Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.

However the factors allowing for a lightweight roof can create a high stress environment for plant material. A well designed green roof with proper drainage and water proofing will provide the expected results. It should also be light weight resistant to decomposition and compression and physically and chemically stable. A good green roof medium is made up of a well developed soil blends.

Green roof systems may be modular with drainage layers filter cloth growing media and plants already prepared in movable often. The green roof manufacturers should fully understand the various needs and specifications of the green roof medium. They can sustain shrubs trees walkways and benches with their complex structural support irrigation drainage and root protection layers. In general the bulk of the water storage in a green roof buildup is in the growing medium.

A green roof system is an extension of the existing roof which involves at a minimum high quality water proofing root repellent system drainage system filter cloth a lightweight growing medium and plants.