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 rainwater (driving rain, runoff water) and condensation moisture contribute to this 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.
Protection of the materials on the façade is carried out using 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 products are water repellents and breathable and strongly limit the absorption of water, and the pollutants it carries, into the material.
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.
