Manufacturer page.

Dal-Tile brands of ceramic tile are a mixture of multiple mineral-based natural materials, that can include various combinations of clay, sand, feldspar, talc, nepheline, shale and/or others. The tiles are either pressed or extruded into the desired shape and generally receive a glaze or ceramic ink application to the surface prior to being fired in kilns at high temperatures. The finished product, ceramic or porcelain tile, is fire resistant, non-combustible, durable (lasts a lifetime) and extremely easy to maintain. As floor and wall coverings, fired 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, fired tile is capable of withstanding a wide range of environmental stresses.