Waterproofing in buildings involves creating a barrier on foundations, roofs, walls, and other structural elements to prevent water penetration. These surfaces are treated to become water-resistant or fully waterproof.Common waterproofing materials include cementitious coatings, bituminous membranes, liquid waterproofing membranes, and polyurethane-based products.Waterproofing is essential for areas such as basements, walls, bathrooms, kitchens, balconies, terraces, green roofs, water tanks, and swimming pools.