An overriding characteristic of mosaic is long life. In this respect, the tile has a clear advantage. It is made of natural materials, is hygienic and non-combustible, is especially robust and able to withstand stress. Other important factors in the design of a tile include high functionality, use of materials, durability, which is connected to the material itself, and ecological sustainability. For mosaics installed in swimming pools, a protective membrane is needed. It is found in tile stores.