Separation of tiles by the location of the object. Ceramic tiles can be created for external or internal work. Tiles for external work are distinguished by high strength, stability against a sharp change in weather conditions. A lot also depends on the method of manufacturing products.- Tiles of one -time firing — this material is made by pressing quartz, clay and other raw materials ingredients. The resulting mixture can have a different shade — it depends on how much iron is in the material, on what porosity it has. The most common tiles of a single burning of light color are explained — this can be explained in high demand in the construction market, such products also have some production advantages.- Highly porous ceramic tiles are made from a special mixture — a single firing is used. It does not differ in high strength, so it is usually used exclusively for wall cladding.