Designed for surface preparation before applying ceramic tiles, plaster, putty, and other finishing materials. Reduces surface water absorption, strengthens the substrate, binds dust, and improves adhesion of subsequent layers. Prevents rapid moisture loss in putty, plaster, and adhesive mixtures, ensuring even drying and long-lasting coating performance. Technical specification: TU U 20.3-36584093-002:2018. Packaging type: plastic bucket, PE canister. Advantages: — deep substrate penetration; — reduced water absorption; — enhanced adhesion for subsequent coatings; — easy application by brush, roller, or sprayer.