MAY 2011 - General Services Administration
The Benefits and Challenges of Green Roofs on Public and Commercial BuildingsA Report of the United States General Services AdministrationMAY 2011Front cover: Image of the green roof on the United States Department of Transportation Headquarters GSA GREEN ROOF BENEFITS AND CHALLENGESTABLE OF CONTENTSCONTENTSEXECUTIVE Purpose of Study ........................................ ........................................ ........................................ ........... Methodology ........................................ ........................................ ........................................ .................. Background to Green Roofs ........................................ ........................................ ................................... Cost.
plant respiration and the insulation, shading and thermal mass of the plant and soil layers • A less frequent roof replacement schedule due to . greater durability than conventional roofs • Reduced stormwater management costs • The creation of job opportunities in roof installation and maintenance and in the emerging field of urban ...
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