UCA® stands for Unique Compatibility Additives. The compatibility of caulks, sealants and fillers with paint is ensured by our unique, proven UCA® Technology. Bostik caulks, sealants and fillers with the UCA® logo offer the best possible compatibility with paint due to specially selected raw materials, specialised additives and dedicated R&D testing facilities. All products in this portfolio come with a clear and transparent CE marking, EN 15651 part 2.
