Shingle roof systems are installed on steep slope applications.  Shingles are available in many various types of materials, colors, and profiles.  The most popular are dimensional or architectural asphalt shingles.  Other shingle roofing materials include slate, synthetic slate, clay tile, and cedar shake which are more expensive but provide a unique and enhanced appearance to the building.  Roof shingles are almost always highly visible and are an important aspect of a building's aesthetics in patterns, textures and colors.