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Zinsser WaterTite Flexible Primer & Finish in White Tint Base is a high-build, water-based coating that primes and finishes exterior concrete and masonry walls with a smooth, flat appearance. Its flexible formula expands and contracts with the surface to bridge hairline cracks up to 1/16 inch, helping protect stucco, brick, concrete block and poured concrete against wind-driven rain. It resists mildew on the coating, efflorescence and highly alkaline surfaces, making it useful for new construction and repainting projects. Apply one coat as a primer or two coats as a primer and finish. This 5-gallon container provides approximately 100–135 square feet of coverage per gallon per coat, depending on surface porosity and application. It dries to the touch in about 4 hours under recommended conditions and cleans up with soap and water. Intended for vertical exterior surfaces; it is not designed to hold back hydrostatic water pressure.
