Moisture and the effects of its presence are well known. It is very difficult to remove the damage caused by microorganisms colonizing the humid environment. The prevention of conditions conducive to the growth of algae, mold or bacteria is better and cheaper. Ceramic tiles are characterized by high resistance to moisture, but do not provide waterproof protection of the substrate. Through the poorly sealed edges by baths, showers, sinks and other water gaps, water can seep into the substrate, causing moisture. This can result in permanent damage or even destruction of the concrete, the formation of cracks, mold growth and efflorescence. Therefore, in areas with high humidity, such as toilets, bathrooms, showers, kitchens, laundry rooms, production facilities, etc. it is necessary to apply additional protection in the form of waterproofing system IZOLANIT.