• Bactericidal treatment designed to effectively eliminate saltpeter before painting or wallpapering. • Suitable for indoor and outdoor use on concrete, cement, plaster, stone, and brick substrates. • Acts as a water repellent, blocking moisture and preventing the reappearance of saltpeter. • Ready-to-use product, milky white in color. • Simple application by roller, brush, or low-pressure sprayer. • Approximate yield of 5 liters to cover between 20 and 35 m² depending on the porosity of the substrate. • Quick drying that allows applying a second coat after 15 minutes and coating after 48 hours.