Prime-A-Pell H₂O is a clear, filmless, low solids, penetrating water-based water repellent for virtually all above-grade, concrete, stucco, precast, brick, sandstone and block masonry. Concrete, stone and masonry treated with Prime-A-Pell H₂O resist water intrusion, stain damage, freeze/thaw spalling, efflorescence and rust damage. The treatment does not alter the color or texture of the surface, nor significantly affect the vapor transmission qualities of the substrate. The solution penetrates the substrate and chemically reacts to create a powerful barrier against water penetration. This barrier is resistant to ultraviolet and water deterioration.