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Ceramic tile is a mixture of multiple mineral-based natural materials, including but not limited to clay, sand, feldspar, talc, nepheline and shale. The tiles are either pressed or extruded into the desired shape and fired in kilns at high temperatures. Ceramic tile is fire resistant, non-combustible, durable (lasts a lifetime) and extremely easy to maintain. As floor and wall coverings, ceramic tile products provide dual functions. They serve 1) an aesthetic function as a design component, and 2) a technical function as a building finishing material. As a building material, ceramic tile is capable of withstanding a wide range of environmental stresses. The versatility of ceramic tile is further enhanced by the almost extensive ranges of colors, textures, and decorative motifs offered by Dal-Tile under multiple brand names. Tile products are available in a wide range of sizes from less than 1in x 1in to more than 24in x 24in. Ceramic tiles are classified by their shaping or production method (either dry pressed or extruded), and the level of water absorption measured as a percentage. Classifications of Ceramic Tile - Wear Ratings from the Porcelain Enamel Institute - Group I Classification - Tile that is suitable for residential bathrooms with light foot traffic. - Group II Classification - Tile that can be used in residential areas, but not areas with high foot traffic, such as in kitchens, foyers, laundry rooms, etc. - Group III Classification - Tile that is recommended for all residential installations with normal foot traffic. - Group IV Classification - Tile that is suited for light to medium commercial applications, such as offices, sales rooms. - Group V Classification - Tile used in heavy commercial traffic areas and is suited for exterior areas, shopping centers, airports, hotel lobbies, and public walkways.