Green Roof Drainage Options

During a dry period the water stored can be reabsorbed by the vegetation layer above.

Green roof drainage options.

If stone ballast is being utilized around the drain the 84 option shown above. The sloped roof allows water to run off without having to modify the roof. The 6 slotted triangle shape is used beneath the aggredrain layer and allows for water to flow freely. The roof might damage the foundation of the building.

Roof drainage options for sloped residential roof. The drainage also contributes to good aeration of the plant roots. 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. 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. Ponding water on flat roofs reduces the roof s lifespan. Sloped roofs are naturally better at preventing pooling due to the design of their structure. 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.

Zurn offers a variety of roof drain solutions suited for modular green roofs such as the z163 and the 84 options both shown below. The greenslope roof ponding repair kit provides a lightweight inexpensive solution to flat roof ponding. However the water coming off. The drainage layer has an important role to play in the total system structure of a green roof.