Dimensional shingles are a new generation of high-quality asphalt roofing products with distinctive, often dramatic, appearances and are among the highest quality roofing products made. They are composed of a heavy fiber glass mat base and ceramic-coated mineral granules that are tightly embedded in carefully refined, water-resistant asphalt. Recently, a new product has surfaced on the market, synthetic slate. It is an innovative roofing product that simulates the appearance, texture and contours of traditional natural slate. It is a carefully engineered polymer composite roofing product that is formulated for beauty, durability and handling.