Assertion: asbestos's product | /r/MadeOf | some roofing felts
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text: Asbestos Roofing materials (photos above) containing asbestos included: asphalt roofing shingles (photo above left) and other products that contained asbestos fibers such as asphalt shingles, roll roofing, and asphalt sealants, coatings, some roofing felts, and mastics,