Composition shingles have a core made of fiberglass with an exterior coating of weather resistant asphalt. The exterior is then embedded with crushed rock. The size and thickness of shingles depends upon each different manufacturer's specifications.
Composition shingles are very popular because of the variety of style and color options. They last between 15 to 30 years and as such, are an economical choice for most owners. Prices vary, depending upon the size of the roof, the customization options and the style of the chosen composition shingle. The least expensive option is a flat shingle, but many homeowners like the aesthetically pleasing 3-dimensional style. Some of the more high end composition shingles are made to look like cedar shingles or classic architectural shingles that suit the style of the home.