Protectosil® CHEM-TRETE® PB 100 is a clear, penetrating, breathable water repellent for use on exterior above-grade concrete masonry units, brick masonry and most natural stones. This product provides resistance against water, alkali attack, acid rain and waterborne staining by penetrating into the substrate and chemically bonding with siliceous materials to form a permanent attachment of the water repellent molecule. Protectosil® CHEM-TRETE® PB 100 is especially suited for making porous substrates, such as split-face block, water repellent. This water repellent effect protects the substrate from wind-driven rain. By preventing water and waterborne contaminants from entering the substrate, Protectosil® CHEM-TRETE® PB 100 reduces problems such as efflorescence, leaching, acid rain deterioration, scaling, dirt buildup, staining, corrosion of reinforcing steel and mildew. It will not cause adverse surface appearance of the substrate. Treated surfaces are fully breathable because the natural moisture vapor transmission is not affected, which will eliminate problems caused by entrapped moisture, including blushing of the sealer and freeze-thaw damage to the masonry.
Typical Applications
Benefits at a glance
The main benefits of the product are:
• High resistance to wind-driven rain
• Excellent resistance to chloride ion ingress
• Reduced efflorescence
• Breathable system
• Deep penetration into substrate
• High resistance to alkali attack
• Long service life
• Substrates already treated with Protectosil® CHEM-TRETE® PB 100 can be painted over
• Keeps substrates cleaner