Treatment Of Deck Drains In Green Roof

The drainage layer is applied over the entire roof area.

Treatment of deck drains in green roof.

In some cases the drainage layer can be designed to retain water and serve as a reservoir for irrigating plants between rainfalls. If stone ballast is being utilized around. And because the assembly incorporates hydrotech s. Designed as a lightweight low profile system the garden roof assembly can be safely installed on roof and plaza decks not engineered to handle the heavy load requirements of a traditional green roof.

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. 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. While also keeping the stone ballast out. Plaza decks and green roofsplaza decks and green roofs january 16 2009 crca 26th annual trade show speaker.

Hydrotech s garden roof assembly allows the design professional to transform virtually any flat or sloped roof into a landscaped environment. The green roof solutions drainage conduit is a stainless steel channel for use with the aggredrain system. Zurn offers a variety of roof drain solutions suited for modular green roofs such as the z163 and the. Utilize two stage drains for plaza decks.

The drain the 84 option shown above will allow for flow through the drain. 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. 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. The drainage layer is installed over the waterproofing membrane to remove excess water and prevent saturation of the growing medium. Multiplying the depth of the green roof media either 3 or 4 inches per green roof mdc 2 by the paw. The 6 slotted triangle shape is used beneath the aggredrain layer and allows for water to flow freely.

You should place the anchor elements directly above the drainage layer and filter fabric. A green roof may require a separately plumbed secondary drainage system also known as the overflow relief system. Secondary overflow drains are located at a higher point on the roof. 84 options both shown below.