Green Roof Medium

It should also be light weight resistant to decomposition and compression and physically and chemically stable.

Green roof medium.

It should have good consistent drainage and aeration with a structure that enables it to hold water. 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. Green roof growing medium is composed of mineral aggregates and only a small amount of organic material. Container gardens on roofs where plants are maintained in pots are not generally considered to be true green roofs although.

Soil tests are integral part of the process and. The green roof manufacturers should fully understand the various needs and specifications of the green roof medium. Intensive green roofs are essentially elevated parks. However the factors allowing for a lightweight roof can create a high stress environment for plant material.

The extensive green roof lightweight cost effective and probably the most popular of the green roofs. 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. A good green roof medium is made up of a well developed soil blends. A well designed green roof with proper drainage and water proofing will provide the expected results.

A green roof or living roof is a roof of a building that is partially or completely covered with vegetation and a growing medium planted over a waterproofing membrane it may also include additional layers such as a root barrier and drainage and irrigation systems.