Quickly repair crumbling mortar or cracked stucco with a lasting, weatherproof seal.
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 need to mix up patching materials. Save time with a quick simple solution that looks good, too.
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.
Window and siding caulk
Super elastic, use in joints up to 3” wide with no slump
Easy to smooth out and clean up
Sticks like crazy to masonry
The textured caulk that makes chimney tuckpointing a breeze
It’s now more than two years since filling the large cracks and this stuff is holding up great – still looks just like concrete, adhering extremely well without a single area where edges have pulled loose, and clearly very tough. No cracking or any other signs of distress. This stuff is great. Highly recommended.
JohnG, Amazon.com review
I had a company quote me $1500 to fix all the cracks in my mortar from my house settling over the years. I found out about this product on-line and found it in a local hardware store for $8. It was a perfect match for my mortar and was easy to apply. My friends can’t even tell where the cracks were. Awesome product. I would highly recommend it.
biggunn, Amazon.com review
This is one of those top 0.1% products for me. It has literally saved me from having to replace (i.e. add a second tile layer) my old fashion type Spanish roof (a roughly 90-year-old home). I can only imagine how much money this will save me. The 3 year old application still looks totally solid in spite of being constantly exposed to intense California sunshine. It is just an amazing product and I am their customer for life.
B. Cunningham, Amazon.com review
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:
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
How to caulk trim / molding
How to caulk siding
How to remove old caulk and silicone
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 our technical experts
Call the Caulk Talk Hotline:800-767-5656
Join our Caulk Tank for information on latest product releases, new products we’re dreaming up and to provide your feedback and advice on how we can make our products even better.
