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The direct approach to retrofitting - protected membrane roofing

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Abstract
Examination of the thermal perfomance of the buiding does not normally begin with the roof. In a first attempt to save energy, the buiding owner has already reduced or increased temperature setpoints to comply with federal standards. The lighting efficiency may have been improved. Depending on wind arrangement of the buiding, increased effeciency and reduced area may be pursued. Air infiltration will have been examined. The walls may be thermally upgraded if insulation can be blown into a cavity, or if redecorating is a secondary objective. These items deserve to be early considerations in examining ways to improve thermal efficiency. They require little investment, and often greatly improve the operation of the building from an energy use standpoint.
Date
12/1979
Author(s)
Peter Deal
Page(s)
978-987
Keyword(s)
retrofit; protected membrane; PMR; thermal performance; energy conservation


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