Seeking to reduce the prevalence of unsightly shingle discoloration caused by blue-green algae growth, which impacts 80 percent of U.S. homes, GAF introduces StainGuard Plus Technology. According to the manufacturer, the company’s proprietary time-release copper ion technology releases 10 times as much stain-fighting copper as its traditional copper coated mineral granules to better resist the growth of algae. This technology is currently available on GAF’s Timberline Ultra HD Stainguard Plus labeled shingles and is backed by a 25-year limited warranty against blue-green algae discoloration.
For more information, visit www.GAF.com.
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