How To Waterproof A Green Roof

Waterproofing and structural design considerations for green roofs.

How to waterproof a green roof.

The course will be launched at the fifth annual international greening rooftops for sustainable communities conference april 29 may 1 2007 in minneapolis. Lay down a strong membrane if you lay down a strong waterproofing membrane from the get go leaks may not become an issue even under the most aggressive green roof roots. First of all your installation ends before any green roof construction begins. Here green roof installer rob gaffney adds a second layer of rubber roofing membrane as a root barrier to prevent damage to the roof.

Green roofs for healthy cities grhc is developing a course on waterproofing and drainage as it relates to green roof design and implementation. From a waterproofing perspective you may want to consider the following draw the line between waterproofing and the green layers. For this project the roof was built to withstand the added load and then covered with a waterproofing membrane. Preformed waterproofing may suit green roofs with gentle slopes and large uninterrupted areas.

The green roof segment harbours a great deal of potential and will become increasingly significant as climate change continues. A green roof brings a wealth of benefits when it is skillfully designed soundly constructed within the load bearing capacity and has a waterproofing system in excellent condition. The waterproofing layer is in fact usually the last layer to be applied before the green roof contractor gets to work. A green roof with many fixings onto the roof deck or penetrations such as for lighting power or ventilation may be more suited to liquid applied waterproofing that is sprayed on or rolled on to form a cohesive single layer.