The absorption of water by porous supports placed on the facade is one of the main causes, direct or indirect, of the chemical, physical and biological degradation of materials. Both storm waters (heavy rain, runoff water) and condensation moisture contribute to the phenomenon.
The water and the polluting agents conveyed by it exert their degrading action also on the metal parts found on the facade, causing oxidation and relative leakage in the areas below.
The intervention to protect the materials placed on the facade is carried out through specific chemicals. It is important to use products that do not form a harmful surface film that is not permeable to steam, which would lead to condensation forming and subsequent detachment of the surface layer of the stone.
CIR water repellents are breathable and severely limit the absorption of water,and pollutants it carries, within the material.
Remove pollutants with the specific cleaner (see Cleaning in Restoration)
If appropriate, proceed with consolidation operations (see Consolidation in Restoration)
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OUR TECHNICIAN RECOMMENDS
Before carrying out the protective treatment of a surface it is necessary to check each time the absorption of the support, in order to evaluate which product to choose, whether solvent based or water based, and to always operate on a clean and perfectly dry surface.