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Roof tiles are designed mainly to keep out rain, and are traditionally made from locally available materials such as clay or slate. Modern materials such as concrete and plastic are also used and some clay tiles have a waterproof glaze. or did you mean interior ceiling tiles? ; They are fabricated from perlite, wood, mineral wool, plastic, tin, aluminum, and fibers from recycled paper. They frequently have patterns comprised of holes, to improve their sound absorption properties, though many have a molded surface providing a textured, sculptered or pressed-tin look to the ceiling.
