Green roof drain boxes optigreen drain boxes prevent soil and granular drainage media from entering roof drains but allow water to flow freely through slots covering the sides and top.
Green roof granular drainage.
The hyproof membrane is a high performance coal tar elastomeric membrane ctem.
Water is retained within pockets on the upper sides of the drainage plates.
Green roof solutions gr32 and gr52 drainage panels come in 24 x 24 interlocking squares constructed of 100 recycled high density polypropylene hdpp.
The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel.
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.
To maximize water storage and minimize weight the granular media should contain a significant percentage of porous material such as heat expanded rock.
Description green roof systems of this type are drained by waffled plastic sheets called drainage plates.
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.
Excess water spills over the edges of the plates and is carried off the roof.
Systems with granular drainage description.
Green roof systems of this type are drained by a base layer of lightweight inorganic granular media.
Their modular design accommodates extensive semi intensive and intensive green roof systems from 4 to 32 thick.