It protects the shell of the building from damp and so the oxidation (rusting) of the armature of the concrete components and the corrosion of the plasterwork are avoided. The thermal insulation performance of the materials is improved and the house maintains its own comfort.
How does the waterproofing protect the building from water and humidity?
Is waterproofing necessary?
Absolutely. Waterproofing in a building is like the skin of a human being. Without it, the life expectancy of a building is reduced dramatically.
Hundreds of thousands of metres of waterproofing are carried out every year in this country, and very quickly, if not immediately, go wrong. Why is this?
This happens for four main reasons:
Mistakes in the design.
Incorrect choice of materials.
Mistakes in application.
Damage after application.
It will thus be easily seen that three of the four reasons why an insulation goes wrong are due to problems of know-how on the part of the engineer who has installed it!