Asphalt shingles are the most common type of shingles in the United States. Asphalt shingles are made using asphalt, fiberglass, and granular fragments. At its core, the asphalt shingle is made of a sheet of fiberglass, which is coated in asphalt and then given a layer of rubber granules (which give your roof its color). Then the shingle is coated in a sealant/laminate to create a single piece of roofing material.