Green roofs are increasingly being installed on residential properties because of their ecological and aesthetic benefits, as well as their capacity to lengthen a roof’s life span. The demand for living roofs rose 115% in 2011, according to the nonprofit Green Roofs for Healthy Cities.
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[1] http://www.forbes.com/sites/marcellefischler/2012/09/12/8-homes-with-living-roofs/