Flex Seal Liquid 16 oz Gray Rubber Coating Sealant – Waterproof, Flexible

Overview

Flex Seal Liquid is a liquid rubber coating in a can that you can brush, roll, dip, or pour on to create a flexible, watertight barrier. The coating dries to a smooth protective film that stays pliable, adapting to surface movement and temperature shifts for ongoing protection.

Key benefits at a glance

• Flexible liquid rubber that forms a continuous seal on irregular or leaking spots
• Multiple application methods for convenient use on different projects
• Goes on smoothly and cures quickly to block water, air, and moisture
• UV resistant to help resist sun damage and extend surface life
• Helps prevent rust and corrosion on metal surfaces and offers chemical resistance

Where you might apply Flex Seal Liquid

This coating is designed for areas that demand a resilient, flexible layer. Roof edges, flashing, and leaks around vents are common candidates. It also performs well in basements and masonry joints where dampness threatens the structure. RVs, campers, trailers, and marine surfaces can benefit from a breathable sealant that remains flexible with temperature shifts. EPDM rubber roofing, masonry seams, and concrete patches can receive a protective, watertight layer that stays pliable as seasons change.

Two practical use case scenarios

Imagine patching a small roof drip where two sheets meet. A thin, even coat can seal the seam while allowing vapor to escape, reducing the risk of moisture buildup. Or consider sealing a damp basement wall where moisture tends to travel along masonry joints, creating a breathable barrier that resists small leaks.

How to apply

1. Prepare the surface by cleaning and drying; remove loose material
2. Shake the can well and ensure the area is ventilated
3. Apply with brush, roller, or pour for continuous coverage; smooth for an even film
4. Allow to dry completely; apply additional coats if needed for extra protection

Important notes

Flex Seal Liquid is designed to be breathable and flexible, which helps the coating adapt to movement and temperature changes. While it is versatile and durable, results vary by surface condition, weather, and preparation. Always follow product instructions for best results.