Heritage® Premium Shingles have a fiberGlass mat construction with a random-cut sawtooth design. Two layers of mat are coated with Asphalt, surfaced with mineral granules and then laminated together. Also includes a self-sealing strip of Asphalt. Nothing expresses your style as a homeowner more vividly than Heritage® Premium Laminated Asphalt Shingles. They simulate the rustic, dimensional look of wood Shakes, without wood's high cost or safety concerns.