ELASTOMERIC WATERPROOF SEALANT: Creates a flexible, durable waterproof membrane that protects chimney crowns from water intrusion; this chimney sealant helps prevent leaks and damage for lasting weatherproof performance FLEXIBLE CHIMNEY REPAIR SEALER: Ideal for sealing major cracks and surface flaws in chimney crowns; this long-lasting chimney sealer stays flexible, won’t crack or chip, & needs no mixing or bonding agents EASY TO APPLY: Use on chimney crowns, corbels, parapets & masonry sills, no primer needed; apply two coats of this waterproofing sealant for protection; tint with mortar dye if desired; don’t apply below 40°F or if temps drop within 24 hrs SURFACE PREPARATION: Make sure the surface is clean and dry before applying; use a stiff poly or wire brush to clear away loose debris; protect nearby roofing with drop cloths; this chimney crown sealer is solvent-free and safe for the surroundings DRY TIME & COVERAGE: This waterproof coating sealant covers 14-18 sq. ft. per gallon at 1/8" thickness, dries in 6 hours; cures in 24–72 hours based on temp and humidity; CrownSeal offers long-lasting protection and is backed by a 10-year warranty ChimneySaver CrownSeal is a flexible, elastomeric waterproof coating designed to seal and protect chimney crowns from water damage. It forms a tough, waterproof membrane that prevents leaks. This chimney waterproofing sealant is perfect for sealing major cracks and surface flaws and stays permanently flexible and no mixing or bonding agents are needed. Easy to apply with a trowel and brush, CrownSeal goes on at 1/8" thickness and dries to a natural concrete finish. No primer is required, just apply two coats for long-lasting protection. It can be tinted with mortar dye to blend with existing masonry and is suitable for use on chimney crowns, corbels, parapets, and masonry sills. Before applying, ensure the surface is clean and dry, and remove loose debris with a stiff poly or wire brush. Protect nearby roofing with drop cloths. Do not apply if temperatures are below 40°F or expected to fall below that within 24 hours. Each gallon covers about 14-18 sq. ft. at 1/8" thickness, dries in six hours, and cures fully in 24–72 hours depending on conditions. It's solvent-free, safe for the surroundings, backed by a 10-year warranty.