The water repellents treatment or the oil repellent treatment makes the stone waterproof without altering its original appearance. This prevents external agents, like dirt, and the oil, which adhereds to its pores makes it easier to clean. It removes dirt and residues of construction and prevents the absorption in floor and wall coverings, which are composed of all kinds of natural stone. This treatment prevents the growth of mold, moss, mildew, oxidations, etc. and also avoids the exit of the material’s salt.