Clay tiles are one of the most distinctive and decorative historic roofing materials because of their variety of shapes, colors, profiles, patterns and textures. One of the benefits of clay tiles is the extended life expectancy-generally at least 100 years, but often several hundred. However, to ensure this longevity, the tiles must be regularly inspected and maintained. Modern clay tiles have even more variety than the historic tiles. Many shapes and styles are offered in a wide variety of colors and glazes.