June 2010
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Keeping it cool

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A cool roof case study investigates white roofs' energy efficiency

by Chris Walker
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After 18 years of exposure to extreme desert heat, the roof system on the Nationwide® Scottsdale Insurance Co. headquarters building in Scottsdale, Ariz., began to deteriorate. The maintenance staff had been chasing leaks for nearly five years when Nationwide Scottsdale Insurance decided to hire Alan Stevens Associates Inc., Cedar Rapids, Iowa, to solve the problem and replace the roof system.

The building's original roof system was a ballasted EPDM membrane over 4 inches of polyisocyanurate insulation on a concrete roof deck blanketed with a 2-inch-thick layer of river rock. The roof system was becoming a liability with regard to structural integrity (from water damage), maintenance costs and energy consumption.

Photos courtesy of Starkweather Roofing Inc., Phoenix.

The Nationwide Scottsdale Insurance building before Starkweather Roofing installed...



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Comments (1) Login to post a comment or rating

Posted by seadubbya on 6/3/2010, User rating 
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To read the full case study, download the data or to learn more about Starkweather Roofing please visit http://starkweatherroof.com/coolroof.

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