2. Roles and functions of waterproofing. Attacks on structures

In the building industry, the purpose of waterproofing is to prevent water penetrating the structure. It can also prevent the passage of water vapour, but this role is generally fulfilled by the vapour barrier.

Three different roles can be fulfilled by waterproofing coatings.

• Durability of structures

  The aim here is to provide lasting protection, throughout the life of the structure, against damage to its structure that could affect its solidity. In particular, in the building and civil engineering sectors, concrete or other masonry structures need to be protected against excessive penetration of water (rainwater, groundwater, aggressive or otherwise), which could then corrode steel reinforcements or damage wooden roof panels. This is even more important for civil engineering structures, which...