Solvent-based impregnating siliconic, organosiliconic, transparent. It is ideal for the treatment of different alkaline materials and not, such as concrete, stone, brick, fiber cement, terracotta, plaster, etc. … as it protects the masonry from water infiltration. It has a high depth of penetration and a good adhesiveness towards the wall surfaces, as well as a low moisture absorption even after long exposure to weather and frost. The treatment gives a pearly effect, is permeable to water vapor and blocks the salt efflorescence. The treatment gives a pearly effect and it is permeable to water vapor and it also blocks the salt efflorescence.