WHAT ARE CONCRETE TILES? They are made of mixture of sand, cement and water, which are molded under heat and high pressure. The exposed surface of a tile may be finished with a paint like material. Concrete tiles have additional water locks, or interlocking ribs on the edges that prevent water infiltration. Concrete tiles come in three main appearances: 1. Flat profile – no curves. 2. Low Profile – small curves and has a rise to width ratio equal to 1:5 or less. 3. High Profile: large curves and has a rise to width ratio greater than 1:5. Concrete tiles can simulate the appearance of traditional clay tiles, wood shake, slate and stone. Like clay, concrete tile surfaces can be textured or smooth, and tile edges can be ragged or uniform. They are resistant to hail, wind, and fire, making them a very safe roofing material when properly installed.