Green Roof Protection Fabric

Root barrier lower filter fabric water retention mat upper filter fabric growing medium and sedum.

Green roof protection fabric.

A green roof system consists of two major groups of components. The roofing base assembly and a vegetated roof system. A filter fabric layer on top should separate the aggredrain from the growing media. These may not be required if the waterproof membrane is certified as root resistant.

Root barriers are often used in green roofs to provide some protection to the waterproofing from invasive stolons rhizomes and from woody roots from trees and shrubs. Compared with green roofs systems using drainage plates or granular drainage this system is the fastest to install and creates the thinnest and lightest green roof assembly. The most common root barriers used are thin polyethylene sheets laid over the waterproofing membrane. It protects the waterproofing and the insulation of the green roof.

It is able to absorb 3 6 l m moisture depending on the product. Our protection mats are multifunctional products which are compatible with multiple membranes for use as a first layer of protection on the waterproofing membrane or above the root barrier. Aggredrain is most commonly used at a 1 minimum depth over a moisture retention mat grs mrm 14 or grs mrm 30. Green roof components can include.

Green roof systems of this type are drained by a multi layer fabric mat called a drainage mat that combines soil separation drainage and protection functions. This geotextile is made of polyester fibres a mixture of mechanically reinforced fibres and regenerated polyester and polypropylene.