Treatment Of Deck Drains In Green Roof

Hydrotech s garden roof assembly allows the design professional to transform virtually any flat or sloped roof into a landscaped environment.

Treatment of deck drains in green roof.

Multiplying the depth of the green roof media either 3 or 4 inches per green roof mdc 2 by the paw. The filter layer on a green roof is designed to prevent soil and other substrates as well as debris from filling the cavities of the drainage membrane. If stone ballast is being utilized around. The drainage layer is installed over the waterproofing membrane to remove excess water and prevent saturation of the growing medium.

While also keeping the stone ballast out. In some cases the drainage layer can be designed to retain water and serve as a reservoir for irrigating plants between rainfalls. Zurn offers a variety of roof drain solutions suited for modular green roofs such as the z163 and the. The drainage layer is applied over the entire roof area.

Green roof drains watts unique designs are engineered to accommodate the fast emerging and often shifting requirements for green roof drainage. Our flexible adaptable components can be configured to meet even the most challenging custom green roof specifications. Both of our permaseal 20p green roof and permaseal 8 green roof drainage membranes have a build in geotextile filter layer making the installation process that much quicker. And because the assembly incorporates hydrotech s.

84 options both shown below. A green roof may require a separately plumbed secondary drainage system also known as the overflow relief system. The 6 slotted triangle shape is used beneath the aggredrain layer and allows for water to flow freely. For example a 3 inch deep layer of green roof media with 40 percent paw treats the.

Plaza decks and green roofsplaza decks and green roofs january 16 2009 crca 26th annual trade show speaker. The green roof solutions drainage conduit is a stainless steel channel for use with the aggredrain system. For flat or nearly flat roofs primary drains are located at the lowest point of the roof. Utilize two stage drains for plaza decks.

The drain the 84 option shown above will allow for flow through the drain. Secondary overflow drains are located at a higher point on the roof. Flow of water into them is promoted by positive drainage. Because green roof soil systems like rooflite s rooftop trees soil system are built up from the bottom it s easy to bury steel mesh concrete blocks lawn grid pavers or ballast stones to use as anchors for trunk tie downs or root ball strapping.