The design of the different drainage layers allows for a portion of the stormwater to be retained above where the water is allowed to flow freely off of the roof.
Green roof roof drains.
Our flexible adaptable components can be configured to meet even the most challenging custom green roof specifications.
Z110 green roof drains are available with enclosure heights ranging from 5 to 18 or as specified.
Intensive layered green roof intensive green roofs have a deeper soil depth therefore the roof drain enclosure height is typically 12 or more.
During a dry period the water stored can be reabsorbed by the vegetation layer above.
Green roof solutions offers many different drainage layer options depending on system goals regarding water retention.
See the full list of features.
The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall.
It buffers water and allows excess water to drain away.
Zurn manufactures a line of green roof drains featuring customizable enclosures to align with the green roof surface.
The drainage layer has an important role to play in the total system structure of a green roof.
Z110 green roof drain shown with 18 height for intensive green roofing applications.