Users' questions

Does Flex Seal last?

Does Flex Seal last?

To ensure its longevity, we recommend you reapply Flex Seal once the area is completely dry. Q: How long will it last? A: Depending on the environment, coats added, and maintenance, many people have found Flex Seal will last for years without cracking, peeling or losing any of its strength or sealing properties.

Is there something better than Flex Seal?

Rust-Oleum Leak Seal dries faster than Flex Seal, so it’s the better option for applying several coats. That’s not the only feature where Leak Seal outperforms Flex Seal. There’s also the temperature resistance; Flex Seal deteriorates faster than it should under extreme weather conditions.

Are there any bad reviews of Flex Seal liquid rubber?

RUINED SOME FURNITURE AND PICTURES ON THE WALL. WHAT A MESS! WILL NOT BUY ANYTHING LIKE THIS EVER AGAIN WITHOUT FIRST TRYING IT OUT. OF COURSE WE HAD TO GO OUT AND BUY ROOFING SEALANT AND REDO THE WHOLE JOB. SORRY WE EVER PURCHASED THIS. VERY EXPENSIVE AND GOT NOTHING FOR OUR MONEY.

What kind of sealant does Flex Seal spray use?

Flex seal liquid rubber sealant seeps into cracks and holes to cover out air and moisture. Flex Seal Spray unlike many other spray foams is storable and can be used several times. When it is sprayed, it forms a thick seal which immediately coats the surface you’re spraying.

What happens when you paint Flex Seal with paint?

It can match any color. Initially, the liquid comes out black as it is sprayed. When it gets dry, it can be painted to match any surface. Other rubber sealants always come in darker colors. This makes them difficult to conceal. With this liquid sealant, surfaces look untouched after they are covered with paint.

What makes Flex Seal so good at sealing cracks?

Even though it’s unmatched in its versatility of sealing cracks, it’s also quite adept at standing the test of time. Flex Seal uses a unique liquid rubber that is actually designed to strengthen over time instead of weakening. In addition to its waterproofing properties, the rubber is also flame and heat resistant.