How To Waterproof A Green Roof

Green roof waterproofing with resitrix epdm roofing membranes reliable roof waterproofing for all green roof systems.

How to waterproof a green roof.

Green roofs for healthy cities grhc is developing a course on waterproofing and drainage as it relates to green roof design and implementation. The course will be launched at the fifth annual international greening rooftops for sustainable communities conference april 29 may 1 2007 in minneapolis. Waterproofing and structural design considerations for green roofs. For this project the roof was built to withstand the added load and then covered with a waterproofing membrane.

Cities are expanding and the global population is growing steadily. A green roof system usually includes a root barrier to protect the waterproofing from aggressive plant roots that can penetrate the membrane. 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. 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. First of all your installation ends before any green roof construction begins. From a waterproofing perspective you may want to consider the following draw the line between waterproofing and the green layers. 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.