Protectosil® CHEM-TRETE® PB VOC is a clear, penetrating, breathable water repellent for use on concrete, brick, concrete masonry units and some natural stones. It is especially suited for making porous substrates, such as split-face block, water repellent in order to stand up against wind-driven rain. By penetrating into the substrate and chemically bonding with silica to form a permanent attachment of the water repellent molecule, Protectosil® CHEM-TRETE® PB VOC prevents water and waterborne contaminants from entering the substrate and causing premature deterioration. It also reduces problems such as efflorescence, leaching, acid rain deterioration, scaling, dirt buildup, staining, the 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 natural moisture 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.
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
• No change in surface appearance
• High resistance to alkali attack
• Long service life
• Substrates already treated with Protectosil® CHEM-TRETE® PB VOC can be painted over
• Keeps substrates cleaner