Green Roof Drainage

Green roof drain building drainage zurn.

Green roof drainage. Green roof drains watts unique designs are engineered to accommodate the fast emerging and often shifting requirements for green roof drainage. Green roofing drainage solutions xf xeroflor s drainage mats xf drainage mats are engineered to divert excess water from the green roof quickly for healthy plant growth. Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall.

Our flexible adaptable components can be configured to meet even the most challenging custom green roof specifications. Allows rainwater to water vegetation in green roofs without waterlogging the plant. Secondary overflow drains are located at a higher point on the roof. The drainage also contributes to good aeration of the plant roots.

Zurn manufactures a line of green roof drains featuring customizable enclosures to align with the green roof surface. For flat or nearly flat roofs primary drains are located at the lowest point of the roof. It buffers water and allows excess water to drain away. See the full list of features.

A green roof may require a separately plumbed secondary drainage system also known as the overflow relief system. Flow of water into them is promoted by positive drainage.