Flex Caulk, Waterproof & Weatherproof Hybrid Polymer Sealant for RV Roof

Flex Caulk is a next-generation hybrid polymer sealant designed to make RV roof sealing and household repairs easier than ever—without needing a caulk gun. Its adjustable Trigger-Flow Nozzle gives you full control over the flow, allowing pinpoint accuracy for tight gaps or a wider bead for larger areas, making every application clean and efficient.

The advanced formula stays permanently flexible and won’t shrink, crack, or turn brittle over time. Unlike traditional caulks that dry out and deteriorate, Flex Caulk expands and contracts with your RV or home materials, maintaining a long-lasting seal through changing temperatures and vibrations.

This waterproof and weatherproof sealant adheres to nearly any surface—wet or dry—and even works underwater. It’s UV-resistant, chemical-resistant, solvent-free, and virtually odorless, making it safe and effective for indoor and outdoor use. From RV roofs, skylights, windows, and vents to kitchens, bathrooms, pipes, trim, autos, and boats, Flex Caulk is built to handle a wide range of sealing tasks.

Its Snap & Save cap helps prevent waste by keeping the unused product fresh. Application is simple: adjust the flow, hold the nozzle at a 45° angle, apply in a smooth motion, wipe away excess with a dry towel, and reseal the cap.

Flex Caulk is proudly made in the USA using globally sourced materials.

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