Verified on May 7th, 2009

http://www.toitsvertige.com/en/index.php

Green roofs improve the quality of the environment while respecting the existing urban development. Specifically, they allow substantial energy savings, they help manage excess rainwater, give added value to the building, greatly reduce the urban heat island effect, they offer acoustic insulation, are said to double the longevity of the roofing membranes and can even provide an additional recreational area.