Because of the composition of the fiberglass mat, less asphalt is needed to give the shingles their durability and strength. The result is a lighter weight and thinner roofing material.

If you, Owens Corning, desire to learn about the shingle installed ... and I have checked the roof since after the first year. Last year I noticed that some of the fiberglass matting was showing ...

and five types of roof coverings: asphalt or fiberglass shingles, concrete or clay tile, metal, and two flat-roof styles — built up or membrane — more commonly used in commercial buildings. Yaworsky ...