Flex Seal Liquid Rubber Sealant Coating – Grey – 32 oz (1 Quart) | Waterproof Seal, Protect & Coat

Flex Seal Liquid in Grey (32 oz) is a thick, durable liquid rubber coating that seals, protects, and waterproofs surfaces with a smooth, flexible, weather-resistant barrier.
Designed for both DIY homeowners and professionals, this powerful formula stops leaks fast and provides long-term protection indoors and outdoors.

What Flex Seal Liquid Grey Does

• Seals leaks & cracks instantly

• Creates a flexible, rubberized waterproof coating

• Protects against moisture, corrosion, and extreme weather

• Works on wood, metal, tile, concrete, PVC, plastic, fabric & more

• Self-leveling formula for smooth coverage

Best For

• Roof leaks

• Gutters & downspouts

• Foundations & basements

• Window & door seals

• RVs, trailers, boats, sheds

• Pipes, AC units & outdoor equipment

• Crafts, DIY projects & repairs