Waterproofing is defined as the use of a material or group of materials Water resistance on the surfaces of the walls and exterior ceilings of buildings In addition to other parts, such as foundations, they make a barrier that prevents Water penetration through the pores of these surfaces. And often This type of insulation is used in parts of the building exposed to moisture with high proportions, such as the vaults and vaults that lie below street level, bathrooms, kitchens, green roofs and more.