Green Roof Roof Drainage Concepts

The drainage capacity is tested according to en iso 12598.

Green roof roof drainage concepts.

Having proper drainage on a green roof is a critical aspect of the system. The green roof consists of 8 superimposed layers 1 to 8. The roof garden build up allows for the realisation of a variety of design concepts even waterfeatures. Design of drainage systems must be matched to the roof construction and catchment area.

The waterproofing membrane root barrier the drainage layer. One of the main concerns that small scale builders have outlined to us is how to drain the roof. The load bearing component of the roof. How to drain the roof.

The green roof can be established on any load bearing components concrete tanbark wood. The design of the different drainage layers allows for a portion of the stormwater to be retained above where the water is allowed to flow freely off of the roof. On zero degree roofs a roof dam irrigation system can be installed which stores up to 40 mm of water. Primary drainage systems are not designed to remove all of the water that falls on a roof during exceptionally heavy rain.

Green roof solutions offers many different drainage layer options depending on system goals regarding water retention. These are collector drains that are designed to flow when only partly full. Is not able to drain properly it can negatively impact the vegetation due to over. The most critical role of the drainage layer is to provide an adequate flow of water off the roof during and after rainfall.

Before commercial drainage layers were developed it was common practice to use a thin layer of gravel to act as a drainage layer. The guide gives rational to the whys and hows of allowing free drainage. This makes for lush plant growth on relatively thin substrate layers. The unique needs of a green roof installation.

Zurn is proud to introduce its green roofing drain product line specifically suited for. Saturation of the soil.