Upon completion of the new facility, CertainTeed will own and operate five four-wide laminated shingle lines in North America, manufacturing the Landmark series laminated shingles. Currently ...

At least a dozen major U.S. and Canadian building-product manufacturers market asphalt shingles, including GAF, CertainTeed and ... asphalt shingles a 15- to 30-year useful life.

CertainTeed Corporation's roofing plant in Shreveport ... the roofing plant has 73 employees and produces several asphalt shingle product lines including XT 25, XT 30 and CT 20 as well as the popular ...