Ultra Spec® Masonry Interior/Exterior 100% Acrylic Sealer is designed to penetrate and seal the surface of new or previously painted masonry surfaces providing the proper foundation for subsequent finish coats. It can be applied to masonry and plaster surfaces with pH levels as high as 13.
Surface Preparation: Surface must be dry, clean, and sound; free of chalk, peeling paint, form oils, efflorescence, and mildew. Remove chalk, surface deposits, and loose or scaling paint by scraping, sanding, and preferably power washing.
Glossy areas should be dulled. Un-weathered areas must be power washed or scrubbed with a detergent solution and rinsed to remove surface salts that can interfere with adhesion. Loose, sandy masonry should be hosed down thoroughly to remove surface particles and allowed to dry. For masonry that has been allowed to cure for a minimum of 7 days under normal drying conditions and has a pH of 13 or less may be sealed with Ultra Spec® Masonry Interior/Exterior 100% Acrylic Sealer (608) prior to finishing. A common exterior paint failure on masonry construction is peeling and scaling, often caused by painting over chalk deposits. The most practical and efficient way to remove this substance is by power washing. Multiple coats of paint that are in an advanced state of deterioration or prior applications of cement based coatings must be removed to a sound substrate.
Application: Stir thoroughly before and during use. Apply one or two coats. For best results, use a premium nylon/polyester brush and premium roller. Avoid lap marks by maintaining a wet edge. This product can also be sprayed.
Spray, Airless:
Pressure: 1,000 – 2,000 PSI
Tip Size: 0.013 – 0.017 Oriffice
Coverage: 200-400 Sq. Ft. per gallon
Dry Time: To Touch in 1 hour, To Recoat in 4 hours with 77°F and 50% relative humidity
Clean Up: Wash brushes, rollers, and other painting tools in warm soapy water immediately after use. Spray equipment should be given a final rinse with mineral spirits to prevent rusting.