Shingles are typically flat and rectangular shaped over the years different types of shingles have been made out of wood, slate, flagstone, fiber cement, metal, plastic and asphalt. Today, asphalt shingles are the most widely used roofing material in the United States. Choosing the type of shingle depends on various factors such as the climatic … Continue reading GAF vs. CertainTeed Vs. Owens Corning Roof Shingles