Flex Seal Liquid 1‑Gallon Waterproof Rubber Coating

Flex Seal Liquid provides a versatile, rubberized coating that can be brushed, rolled, dipped, or poured for a seamless, watertight seal. Ideal for roofs, basements, RVs, campers, trailers, marine vessels, EPDM surfaces, and masonry, this clear liquid forms a flexible, breathable barrier that resists UV rays, rust, and corrosion while protecting against water, air, and moisture.

Designed for easy application, the formula spreads smoothly and cures quickly, delivering a durable, chemical‑resistant finish that adheres to a wide range of substrates. Whether you're tackling a roof repair, sealing a basement wall, or protecting a marine hull, Flex Seal Liquid offers a reliable, professional‑grade solution for both DIY enthusiasts and contractors.