Green Roof Drainage Material

On modern lightweight green roofs plastic drainage sheets or boards are the preferred drainage materials.

Green roof drainage material. Some options also include a water retention fleece made of 100 recycled polymer fibers to capture and store water and manage storm water runoff. It forms an extremely stable and pressure resistant sub base and sometimes serves as an additional thermal air layer. They can also be used to increase the size of the root growth zone and provide space for an aeration system. The advantage of the latter is that water can be stored and used later by the plant.

They can also provide additional functions for the green roof other than just drainage. The grs gr52 panel size is 24 x 24 x 2 125. Green roof drainage system xf 3111 drain water retention for semi intensive gd. Systems with drainage mats.

The drainage layercan be created using different lightweight aggregate materials such as gravel clay tiles and lava rock. The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel. Xf drain green roof drains contain a minimum of 40 by weight of recycled polymer from post industrial sources. 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.

The general design of a green roof consists of four distinct layers. Bauder sdf drainage layer. A function of the drain layer is the application of a root resistant filter fabric. The drainage layer is applied over the entire roof area.

It is made of a filtration veil and the polyamide monofilament fibre network layer. Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. Plastic drainage layers may be rigid open mesh structures that allow unrestricted drainage of water or they may have a cup style egg carton design that enables water to be stored at the base of the profile see image below. Protection drainage and filtration.