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Tikkurila HydroBlock WB is a transparent water impregnant designed for "tight" mineral surfaces. It creates a hydrophobic surface, preventing water penetration while allowing the passage of water vapor. The impregnant limits salt movement, doesn't form a surface layer, and hinders the growth of algae and discoloration. Ideal for facades, tiles, and paving stones, it offers effective protection against rain and environmental factors.

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