Almost every mineral substrate in old buildings is contaminated with water and salt. This explains the requirement of monument protection for an optimal capillary and diffusion-open coating, which should absolutely prevent salt and moisture accumulation and also withstand all modern environmental stresses.

Gentler capillary drying
The most effective dehumidification mechanism is capillary drying, in which water and salt are transported from the inside to the outside of the wall surface. History enables a more gentle dehumidification down to the building equilibrium moisture level and, as a hygric diode, prevents new moisture ingress, for example through rain. Algae, moss and fungi no longer find a breeding ground and the facades retain their valuable appearance for many years – thanks to the physical properties and high-quality formulation of History.