Newsbrief from Environmental Building News

Green Roofs Continue to Proliferate

 

Vegetated roofs remain small oases amid a desert of more conventional roofs, but according to a survey by Green Roofs for Healthy Cities, a nonprofit industry organization, 3.1 million ft2 (290,000 m2) of green roof were installed in 2008, reflecting a growth rate of 35% over 2007.

Chicago distinguished itself for the third year in a row as the city with the most green roof—over half a million square feet—installed in the year covered by the survey. Washington, D.C., New York, and Vancouver, British Columbia, also placed high in the rankings.

A dramatic example of growing public policy support for green roofs is Toronto’s green roof bylaw, passed in May 2009, which sets a construction standard for the roofs and establishes minimum percentage requirements for green roof area on new large residential buildings, schools, commercial and industrial buildings, and nonprofit housing.
July 1, 2009
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