• Fills large gaps, cracks, and holes with a moldable, super thick paste that dries to a strong, flexible, waterproof coating.
• Works on a wide variety of surfaces including wood, concrete, metal, tile, masonry, fabric, and more.
• Can be applied on dry or wet surfaces and even cures underwater thanks to its advanced hydrophobic formula.
• Easy to use.

Flex Paste is a versatile, super thick, rubberized sealant paste that clings to surfaces and instantly fills large gaps, cracks, and holes, transforming into a strong, flexible, watertight, rubberized coating that seals out air, water, and moisture. Can be applied on dry or wet surfaces, even underwater, thanks to its advanced hydrophobic formula. It's ideal for fixing cracks and holes, foundation and concrete repair, sealing out rodents and pests, bath and shower repair, roof repair, RV and motorhome repairs, auto and boat fixes, lawn and garden projects, and much more. Adheres to a wide variety of materials including wood, glass, tile, concrete, aluminum, metal, brick, stucco, masonry, copper, fabric, fiberglass, ceramic, porcelain, natural stones, roofing, PVC, EIFS, EPDM, CSPE, Hypalon polyurethanes and others.