3M Premium Cool Roofing Granules and 3M Standard Cool Roofing Granules are two different color classes of ceramic-coated minerals used as surfacing material in asphalt roofing products. These granules are colored with durable pigments, bonded in a ceramic matrix and treated to promote adhesion to asphalt.
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3M Corporate Headquarters3M CenterSt. Paul, MN 55144-1008
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