MADE TO DO
MORE.

Perfect for Waterproofing
Prevent rust and corrosion
Repair Roof leaks
Self-leveling Formula
Tough sealant for boats

Testimonials

flex seal liquid gray next to concrete crack filled
five Stars

"I've been using the Flex Seal Liquid for the past five years and I'm very satisfied with it's performance and endurance for a number of exterior applications..."

James
Courtesy of Bazaarvoice
flex seal liquid white with tool next to it
five Stars

"This liquid was easy to use and sealed up a stubborn leak I've had. It blended right in with the white background so you cant even tell there was ever an issue..."

Scott S
Courtesy of Bazaarvoice
flex seal liquid next to aluminum canoe being applied with a paintbrush
five Stars

"Used it to seal leaks in an aluminum canoe. I put on two coats and let it dry, as directed. My canoe now has no leaks. It worked great!"

Scott R
Courtesy of Bazaarvoice
flex seal liquid white on top of rusty metal roof
five Stars

"Flex Seal is without a doubt the best roof coating I've come across for sealing rubber roofs on travel trailers. It stays flexible and seals ALL leaks."

Larry
Courtesy of Bazaarvoice
Brush, roll, dip or pour. From quick fixes to creative projects, Flex Seal® Liquid is the go-to solution for sealing, coating, and protecting virtually anything.
flex seal liquid black pouring down and pooling at bottom
flex seal liquid black pouring down and pooling at bottom
Brush, roll, dip or pour. From quick fixes to creative projects, Flex Seal® Liquid is the go-to solution for sealing, coating, and protecting virtually anything.
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Seals out Water, Air & Moisture
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Withstands Extreme TEMPERATURES
(-80°F to 350°F )
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Works iNDOOR & OUTDOOR

3 Ways to Use

flex seal liquid black being applied with roller in a basement

Basements Stay Dry.

Flex Seal® Liquid creates a thick, watertight barrier that locks out moisture and protects against water damage. Ideal for sealing basement walls, floors, and trouble spots.

flex seal liquid gray being applied on metal roof with roller

Tough Enough for the Road.

From long road trips to open waters, Flex Seal® Liquid is built to withstand the elements. Coat roofs, seams, and hulls for strong, flexible protection you can count on.

flex seal liquid outside next to planter

DIY, Ready for the Outdoors.

Turn any container into a weather-resistant planter with Flex Seal® Liquid. Coat the interior to prevent rot, rust, and water seepage, so your DIY projects last through every season.

The Liquid That Does It All
Frequently Asked Questions
Find answers to questions about Flex Seal Liquid, its uses, and applications.