Green Roof Granular Drainage

Water is retained within pockets on the upper sides of the drainage plates.

Green roof granular drainage.

Their modular design accommodates extensive semi intensive and intensive green roof systems from 4 to 32 thick. The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel. 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 hyproof membrane is a high performance coal tar elastomeric membrane ctem.

However its water storage and drainage capacity is limited so it is primarily used for sloped roofs not suitable for drainage type p or type g. Green roof systems of this type are drained by a base layer of lightweight inorganic granular media. Systems with granular drainage description. Description green roof systems of this type are drained by waffled plastic sheets called drainage plates.

Green roof drainage system of all the choices the owner or specifier has to make when designing a green roof drainage system the choice of waterproofing is easy. The grs gr52 panel size is 24 x 24 x 2 125. Excess water spills over the edges of the plates and is carried off the roof. A granular drainage layer that can be easily adjusted for any area or depth for extensive semi intensive or intensive green roofs in multi course systems promotes healthy plant growth by retaining draining water in a natural way provides a more natural root space with better water air distribution than synthetic options.