Anti-Carbonation Additive for Architectural Coatings

Anti-carbonation additives improve the CO2 diffusion resistance of exterior concrete and masonry coatings, preventing the carbonation process that lowers concrete pH and triggers reinforcement corrosion. These additives are typically elastomeric polymers or finely divided mineral fillers incorporated into facade paints and protective coatings to achieve high CO2 barrier values (SD CO2 > 50 m equivalent air layer). They are essential components of exterior coating systems designed to meet EN 1504 and similar protective standards.