LastiSeal is a unique, state-of-the-art, waterproofing sealer for bricks, concrete, mortar, stones, and porous building materials backed by a 15-Year Waterproofing Warranty. This waterborne, polyester-polymer and polyurethane sealer, penetrates up to 4 inches inside brick, mortar, grout, concrete and masonry. LastiSeal fills the pores internally, bonding the substrate and curing as a hard plastic inside. A sealed surfaces will shed water and unless too rough, bead for years to come! UNSURPASSED PROTECTION and SERVICE LIFE. LastiSeal SATIN leaves an attractive low-gloss finish. Once cured (24 hours), the seal is practically permanent! SAFE, INDOOR/OUTDOOR USE: Seal bricks walls and floors, indoor and outdoors, basement concrete, outdoor concrete, pavers, driveways, pool-decks, patios, stones, tiles, grout, koi-pond, porous stone and even wood! Non-toxic, non-flammable, and non-hazardous. No odor. Ultra-low VOCs. Not harmful to plants. PROTECTS AGAINST: Freeze-thaw damage, wind-driven rain, negative side water pressure, spalling, spills, organic growth, humidity, and efflorescence. PREP: Remove old paint, adhesives, oil stains, and efflorescence. Let new concrete cure for at least 4 weeks. Mask glass and finished surfaces against over-spray. CONDITIONS: The surface and ambient air must be above 45 °F but not hot in direct sunlight during the application. Surface must be dry. APPLICATION: APPLICATION: Using a hand-pump garden sprayer (or a paint roller) apply a continuous saturating film to the surface and back-roll any puddles. Ready for foot traffic in several hours and for vehicles in 3 days. COVERAGE: Brick – 800-1,000 sq. ft., Concrete – 1,000–1,200 sq. ft. More porous building materials may require additional applications. SHIPS in TWO (2) x 2.5-GAL CONTAINERS.