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It’s Easy, It’s Fast, and It Works.

Quickly repair crumbling mortar or cracked stucco with a lasting, weatherproof seal.

Find Mor-Flexx® Near You
Learn more about Mor-Flexx® 
Features and Benefits Video 0:48
MSRP $7.99

Textured like mortar - stretches like rubber

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Super elastic, use in joints up to 3” wide with no slump

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Easy to smooth out and clean up

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Sticks like crazy to masonry

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The textured caulk that makes chimney tuckpointing a breeze

Blends like a Dream

The textured formula of Mor-Flexx® is so easy to apply, smooth out, and clean up, even a novice can execute a seamlessly blended, beautiful repair on crumbly mortar, or cracked stucco.

No Messy Mixing Powders

No need to mix up patching materials. Save time with a quick simple solution that looks good, too.

Won’t Crack Under Pressure

The most dependable result of repairing cracked mortar and stucco is – they crack again. Bummer. Not with Mor-Flexx®.  It looks like mortar but it dries like rubber. Now you can sleep at night.

Find out What Mor-Flexx® Can Do

Forget the concrete powder, mix bucket, and big trowel. Just squeeze in Mor-Flexx® to repair crumbly mortar, cracked stucco, or textured walls. It’s simple, it’s fast, and it works. Mor-Flexx may look like mortar but it stretches like rubber, staying elastic year after year.

It’s ugly. Your mortar cracks and your stucco streaks. Replacement and repeated repairs re-crack, not to mention that they’re costly and time-consuming. Forget the concrete powder, mix bucket, and big trowel. Just squeeze in Mor-Flexx® to repair crumbly mortar, cracked stucco, or textured walls. It’s easy, it’s fast, and it works. Mor-Flexx® is textured to blend in seamlessly with mortar and stucco, yet is elastic like rubber, able to span cracks for permanent, years-long repairs. With Mor-Flexx®, no one will know you had an unsightly crack, including you.

Adheres to a variety of building materials and other surfaces, including:

  • Chimney tuckpointing
  • Windows
  • Siding
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Where not to use

You shouldn’t use Mor-Flexx®:

In areas of constant water submersion or frequent, prolonged puddling. (Think ship hulls and swamps.)

In areas with high foot or vehicle traffic* such as driveways, sidewalks, or decks.

On concrete that’s less than 6 months old. It’s so immature, it’ll just make wise cracks.

Where hydrostatic resistance is wanted, like the Hoover Dam.

*Does not include hoverboards or flying vehicle traffic

Looking to learn more?

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We’re here to help see your project through to the end

Not sure which sealant, caulk, or other product is right for your job? Looking for the nearest location to buy products for your next home project? Don’t know exactly how to tackle your repair? We’re here to help. Chat with one of our technical experts or call the Caulk Talk Hotline at 800-767-5656.

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