From gaf materials corp.'s site: no description yet
GAF, North America's Largest Roofing Manufacturer, has been proactive with products and services that help roofing professionals and property owners meet these standards while providing the building performance that they need.
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A story covering the "urban heat island" effect, which is getting increased attention nationwide from planners, architects and building manufacturers searching for ways to cool sweltering cities, save energy and reduce greenhouse gas emissi...
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