PS-21 is a ready-to-use, silicone-based solution without solvents, for the waterproofing of inorganic substrates. Certified with the CE marking as a hydrophobic impregnation, according to EN 1504-2.

• It provides excellent water-repellence
• It is vapor permeable, permitting breathing of the structure
• Does not form a skin on the application surface and does not alter its appearance
• Protects the surface from salt stains, effects of frost or filth, because it prevents absorption of rain water or dirt
• It is suitable for very alkaline substrates
• Protects from carbonation
• It is suitable for slightly wet substrates
• Coverage: 0.20-0.40 L/m²