Green Roof Drainage Options

Trees on green roofs.

Green roof drainage options.

During a dry period the water stored can be reabsorbed by the vegetation layer above. It buffers water and allows excess water to drain away. Grs drainage products typically fit into a green roof system above grs root barrier and below grs filter fabric. Sloped roofs are naturally better at preventing pooling due to the design of their structure.

The drainage layer has an important role to play in the total system structure of a green roof. The roof might damage the foundation of the building. Roof drainage options for sloped residential roof. Zurn offers a variety of roof drain solutions suited for modular green roofs such as the z163 and the 84 options both shown below.

Depending on regional precipitation rates and the water retention goals for your specific project green roof solutions has a full range of products to meet your needs. However the water coming off. The 6 slotted triangle shape is used beneath the aggredrain layer and allows for water to flow freely. The sloped roof allows water to run off without having to modify the roof.

The green roof solutions drainage conduit is a stainless steel channel for use with the aggredrain system. The greenslope roof ponding repair kit provides a lightweight inexpensive solution to flat roof ponding. If stone ballast is being utilized around the drain the 84 option shown above. There are several drainage options to repair pooling or ponding water on flat roofs including internal drains gutters and downspouts scuppers and roof leveling compounds.