Reasons why waterproofing is important Waterproofing is a fundamental construction requirement. Modern buildings are waterproof, using membranes and coatings to protect the integrity of the structure. However, every year a large number of households and commercial premises report damage and problems that may be associated with inadequate waterproofing of buildings. If you do not stop the penetration of water on time, it will cause serious damage to the building. The service life of a structure depends on its stability, and this is what affects the ingress of water. Therefore, the waterproofing of the building is very important, and in recent times more attention has been paid to it.