The product should extend 150 mm above the finished surface of all upstands such as vent pipes chimneys and other roof penetrations to ensure complete roof protection.
Green roof protection fabric.
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.
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.
There are multiple manufactures that offer different green roof solutions for any size of roof.
Grs protection mat comes in rolls that are easy to install and provide excellent membrane protection.
Systems with drainage mats.
10 5 oz 18 oz and 30 oz.
Protection mat sheeting should be installed with overlaps of 100 mm and some products have rubber backing that requires gluing in situ.
With the german evolution of modern green roof technology in the last 4 decades more and more green roof systems have been developed and existing systems or green roof components have been improved.
An important consideration with filter fabric is the promotion of the flow rate while preventing media runoff.
The highly retentive qualities of this fabric provide a slow evaporative release of moisture for green roof plants from deep in the green roof system.
The grs ff35 has a high flow rate of 150 gallons per minute per square foot.
Grs protection mats come in three weights.
An important consideration with filter fabric is the flow rate while preventing media runoff.