Sikagard-701 W is used as a water-dilutable, silane-based impregnating sealer that makes absorbent mineral surfaces like concrete, brickwork, and stone water-repellent and resistant to chloride ions, reducing corrosion and damage from rain and de-icing salts without forming a vapor barrier. It's applied to structures like bridges, walls, and pavers to protect them, enhancing durability, especially in humid or tropical climates.