A clear, penetrating, breathable water repellent for use on concrete, brick, concrete masonry units and some natural stones. Prevents water and waterborne contaminants from entering the substrate and causing premature deterioration. Penetrates into the substrate and chemically bonds with silica to form a permanent attachment of the water repellent molecule. Protectosil CHEM-TRETE PB VOC is especially suited for making porous substrates such as split-face block water repellent. This water repellent effect stands up against wind-driven rain. By preventing water and waterborne contaminants from entering the substrate, Protectosil CHEM-TRETE PB VOC reduces problems such as efflorescence, leaching, acid rain deterioration, scaling, dirt buildup, staining, corrosion of reinforcing steel and mildew. Protectosil CHEM-TRETE PB VOC will not cause adverse surface appearance of the substrate. Treated surfaces are fully breathable because the naturalmoisture vapor transmission is not affected. This will eliminate problems caused by entrapped moisture, including blushing of the sealer and freeze-thaw damage to the masonry.
