Green Roof Drainage Material

An impermeable roof membrane and root barrier a drainage layer lightweight growth media and adapted vegetation see figure 1.

Green roof drainage material.

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. Green roof solutions gr32 and gr52 drainage panels come in 24 x 24 interlocking squares constructed of 100 recycled high density polypropylene hdpp. A function of the drain layer is the application of a root resistant filter fabric. On modern lightweight green roofs plastic drainage sheets or boards are the preferred drainage materials.

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. The advantage of the latter is that water can be stored and used later by the plant. Systems with drainage mats.

It is made of a filtration veil and the polyamide monofilament fibre network layer. They can also provide additional functions for the green roof other than just drainage. The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel. Bauder sdf drainage layer.

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. Drainage protection filtration layer it is used for lightweight green roofs terraces and has many functions. The grs gr52 panel size is 24 x 24 x 2 125. The drainage layer is applied over the entire roof area.

Xf drain green roof drains contain a minimum of 40 by weight of recycled polymer from post industrial sources. The drainage layercan be created using different lightweight aggregate materials such as gravel clay tiles and lava rock. Green roof drainage system xf 3111 drain water retention for semi intensive gd. They can also be used to increase the size of the root growth zone and provide space for an aeration system.