Green Roof Water Drainage

Note that there was very little if any runoff during the may 1 to sept 30 growing season.

Green roof water drainage.

These elements have low retention capacity. Our flexible adaptable components can be configured to meet even the most challenging custom green roof specifications. How to drain the roof. For flat or nearly flat roofs primary drains are located at the lowest point of the roof.

Flow of water into them is promoted by positive drainage. Green roof drains watts unique designs are engineered to accommodate the fast emerging and often shifting requirements for green roof drainage. Drainage and water retention element. One of the main concerns that small scale builders have outlined to us is how to drain the roof.

Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. Vegetation that does not like anaerobic conditions can be killed off. Benefits of green roof. It can be used for light planted roofs.

Together they form the drainage layer of the extensive green roof. Water retention and drainage board. Sub surface run off must drain efficiently from the substrate into the drainage layer off the roof. However too much water on a roof can cause a number of serious issues.

Figure 2 shows the daily rain and associated daily green roof runoff for 1993 in state college pa for a green roof having a maximum of 1 6 inches of water retention storage. Greenslope is a roof leveling compound that helps eliminate water ponding areas and facilitate flat roof drainage. This roof ponding repair kit can be topcoated with all commonly used roof coatings to waterproof a flat roof. The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall.

Allows rainwater to water vegetation in green roofs without waterlogging the plant xf is highly permeable geo composites that combine drainage filter aeration and water retention functions in one product. Diadrain 60h up water retention and drainage board. Xf drainage mats are engineered to divert excess water from the green roof quickly for healthy plant growth. Lack of water is one of the biggest stresses on a green roof.