Polyurethane is considered one of the best waterproofing materials. It can be applied seamlessly and penetrates the surface deeply and evenly. Thus, the polyurethane membrane will fill in even the finest cracks in concrete, reducing its water absorbency capacity. Another key benefit of polyurethane is that it resists oil, detergents, and various chemicals.
These characteristics and benefits recommend polyurethane as one of the most versatile waterproofing materials. It can be applied or walls, balconies, terraces, and walls.
As for the cost, it is in the premium range. The average application price is $10 per square meter of building.