Asphalt shingles also have varying expected maximum life spans, depending on the quality of the shingle.

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Products include respirators, surveillance equipment, radio frequency identification equipment, insulation, weatherproofing materials, cleaning products, mats, and granules for asphalt shingles.

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Asphalt shingles ( the most common roofing material in the U.S.) can become loose, cracked, be blown off by the wind or be damaged by hail.

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Yes, there's opportunity here for someone with Thomas Edison's creativity and a willingness to work on ... asphalt roof shingles.

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