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Mor-Flexx 10.5-oz Exterior and Specialty Gray Paintable Latex Caulk

Ratings & Reviews for Sashco Mor-Flexx 10.5-oz Exterior and Specialty Gray Paintable Latex Caulk

4.5
328
Review
 4.5 out of 5
329 Reviews


93% Recommend this product

Ratings may include incentivized customer reviews.

What Customers Are Saying

Customers overwhelmingly praise this mortar caulk for seamlessly blending with existing mortar and stucco, often appearing indistinguishable after drying. Reviewers consistently highlight its ease of application, smooth texture, and water-based cleanup. Many report it holds up well under weather exposure without cracking, remaining flexible over time. A few mention difficulty extruding from the tube or slight color variations on older mortar, but the vast majority consider it a reliable, long-lasting repair solution for both DIYers and professionals.

Customer review summary generated by AI, including incentivized reviews.
329 Customer Reviews

Love this stuff!!! Perfect match!

Used to repair missing tile grout sections after replacing trim. Matched light grey grout perfectly and the sanded texture made it indistinguishable from the original grout.

March 19, 2024
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worked great between vinyl tile as grout

Would Recommend
March 16, 2024
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Colored grout caulking with sand

Worked great and matched grout perfectly.

March 10, 2024
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Works like caulk, looks like concrete/mortar.

Would Recommend

Looks just like mortar, but has the give and applicability of caulk! It was the perfect solution between our brand new solid quartz countertop and the existing (very uneven) decorative exposed brick wall.

February 18, 2024
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Works great!

Would Recommend

This stuff is great because it blends in with the mortar and you can't even tell you repaired anything.

October 12, 2023
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DIY for fixing cracks in stucco was made easy!

Would Recommend

Quick fix for cracks in stucco

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Would Recommend

Super easy to spread around and make it blend in with existing concrete walls. After a little paint, I can't even see where the cracks used to be.

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Will buy it again! I liked it!

Would Recommend

It stuck to what I had to put it on and filled the gap.

August 23, 2023
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Easy to work with

Would Recommend

Looks good so far. Time will tell how long it lasts. A different brand I used previously started to separate from the brick after a couple year.

July 18, 2023
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This stuff is great!

Would Recommend

Great application, has good body and blends in with existing brick mortar.

June 23, 2023
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Highly Recommend

Would Recommend

This stuff looks so much better than regular caulk or sealant for sealing around stone or faux stone. Charcoal matches a lot of stone applications. I love it!

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I really like this stuff!

Would Recommend

I heard about this stuff from a couple of pros I follow and they were right. This is such easy cleanup and really looks like mortar. I actually used it in my kitchen where the tile backsplash meets the countertop to give the appearance of grout but to provide the waterproofing of sealant. It looks excellent, so much better than silicone or even plain acrylic caulk. Highly recommend to anyone looking for a natural stone look.

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Good for temporary seal

Good product to temporarily seal morter cracks in wall.

June 3, 2023
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Creates a Great Seal

Would Recommend

The caulk was recommended by our flooring installation contractor to create a seal between our masonry raised hearth and new laminate flooring. Install was simple, easy, and quick.

May 25, 2023
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Love this stuff

Would Recommend

Goes on smooth, easy water cleanup. I don’t use anything else! Great sanded caulk, looks just like mortar.

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Quality product used by professionals

Would Recommend

Does what it's supposed to and more

May 12, 2023
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