The drainage layer has an important role to play in the total system structure of a green roof.
Roof drains for green roofs.
The grs gr52 panel size is 24 x 24 x 2 125.
Green roof solutions gr32 and gr52 drainage panels come in 24 x 24 interlocking squares constructed of 100 recycled high density polypropylene hdpp.
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.
Z110 green roof drains are available with enclosure heights ranging from 5 to 18 or as specified.
The gr52 can withstand 0 352 gallons per square foot or 1 4 gallons per panel.
A green roof may require a separately plumbed secondary drainage system also known as the overflow relief system.
During a dry period the water stored can be reabsorbed by the vegetation layer above.
Green roof trays is simple in design easy to install and uses our standard green roof planting method for roof maintenance and repair.
Z110 green roof drain shown with 18 height for intensive green roofing applications.
For flat or nearly flat roofs primary drains are located at the lowest point of the roof.
The drainage also contributes to good aeration of the plant roots.
J drain can be used on all your greenroof applications.
Why is drainage important.
Intensive extensive greenroofs.
It should have good consistent drainage and aeration with a structure that enables it to hold water.
Secondary overflow drains are located at a higher point on the roof.
Use in non pedestrian areas of green roof systems.
Flat sloped roofs.
Zurn manufactures a line of green roof drains featuring customizable enclosures to align with the green roof surface.
Planted hardscaped areas.
Intensive layered green roof intensive green roofs have a deeper soil depth therefore the roof drain enclosure height is typically 12 or more.
See the full list of features.
Intensive roof specialized green roof drains 1900 green roof main area drain with standpipe 15 1 4 diameter drain with perforated standpipe.
It should also be light weight resistant to decomposition and compression and physically and chemically stable.
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.
1901 green roof planter drain overflow standpipe 15 1 4 diameter drain with standpipe and 5 8 orifice to meter rainwater.
It buffers water and allows excess water to drain away.
Flow of water into them is promoted by positive drainage.
