Flex Seal Liquid Rubber Coating Sealant – Waterproof, Flexible, UV Resistant, 1 Gallon

Overview

Flex Seal Liquid is liquid rubber in a can that you can brush, roll, dip, or pour onto surfaces to create a flexible, rubberized coating. This convenient solution forms a continuous film that helps shield areas from water, air intrusion, and moisture. It’s designed to be easy to apply, reducing the need for heavy equipment or complex mixes while delivering a durable, protective layer.

Key Benefits

• Flexible rubberized coating that seals out water, air, and moisture
• Goes on smoothly and covers large areas quickly for faster projects
• UV resistant, helping surfaces endure sun exposure over time
• Supports rust and corrosion resistance with chemical resilience
• Breathable film that accommodates minor expansions and contractions of surfaces

Where to Use

• Roof repairs and leaks on metal, asphalt, concrete, and other common roofing substrates
• Basement and foundation sealing to deter dampness and moisture intrusion
• RVs, campers, and trailers to protect seams, vents, and exposed edges
• Marine applications such as decks or exposed surfaces near the water
• EPDM, masonry, and other surface types that benefit from a flexible protective layer

Application Tips

Prepare a clean, dry surface. Apply using your preferred method—brush, roller, dip, or pour—depending on the area. Allow the initial coat to cure, then add a second coat if you want extra protection. For best results, work in thin, even layers and maintain good ventilation during curing.

Finish and Care

The resulting coating provides a durable, weather-ready film that remains flexible as conditions change. Store the can upright in a cool, dry place and follow label safety guidelines when applying.