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Red Devil

Model # 0646

Internet # 202261765

10.1 oz. Masonry and Concrete Repair Caulk

This item has been discontinued.
The Home Depot no longer carries this specific product.

$3.97 /each




Model # 0646

Internet # 202261765

This 10.1 oz. Masonry and Concrete Repair Caulk is ideal for patching cracks in steps and sidewalks and for repairing mortar between bricks, stone and cinder block. The textured finish blends in with mortar for a seamless look.

  • Acrylic-compound formula is non-toxic
  • Ideal for patching cracks in steps and sidewalks and for repairing mortar between bricks, stone and cinder block
  • Paintable
  • For exterior use
  • Moisture, mold and mildew resistant
  • Permanently flexible
  • Dries to the touch in 30 minutes with a 72-hour cure time
  • Covers 50 lin. ft.
  • Cleans easily with water

Info & Guides

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Individual size (oz.) 
Caulk Form 
Standard Tube 
Caulk Type 
Concrete & mortar 
Coverage (linear ft.) 
Cure time (hours) 
Dry color family 
Dry to touch (min.) 
Fire and high heat resistant 
Longevity (years) 
Moisture Resistant 
Mold and mildew resistant 
Paint Product Type 
Permanently flexible 
Professional Paint Supplies & Values 
Pro Supplies 
Warranty / Certifications
Certifications and Listings 
No Certifications or Listings 
Manufacturer Warranty 


Rated 4.2 out of 5 by 11 reviewers.
Rated 5.0 out of 5.0 by Great product at a good price! I purchased this product to fill in a very large crack on our front porch. The product applied easily, and dried super-fast. It's kept the rain water and bugs out! Now, I'll sand it all down and repaint soon. May 28, 2013
Rated 1.0 out of 5.0 by Concrete Caulk Red Devil I used this on a front sidewalk (3) three weeks ago and still waiting for it to harden. Save yourself some money just take you're kids silly putty and use it instead. And YES, I followed the directions. This is only the second bad review I have ever written about a product and I have bought more than 400 items online. This products was a waste of my money and will be of yours! September 1, 2015
Rated 5.0 out of 5.0 by concrete caulking Just as advertised. Took a few tries to get it looking good but turned out beautiful. August 18, 2015
Rated 5.0 out of 5.0 by Just what I needed I chose this product for it's color which is a lighter shade of gray than some of the other products offered in the marketplace. This was perfect for matching my light colored mortar. In addition, the product is very easy to work with. I've been very happy with the results! August 10, 2015
Rated 5.0 out of 5.0 by Easy to work with. PROS: Easy to work with. Is thinner/more liquid than I expected, but this allows the product to penetrate and adhere very well once cured. Although gray in color, it is a lighter gray than the color-indicating cap shows. It does have some material mixed in to resemble mortar texture when finished -- and added bonus. CONS: Claims 50 linear feet -- but this is for a 3/16" bead (ie, less than 1/4") -- so you'll likely need more than you think. OVERALL: I've used this product for multiple applications around my house. Have never experienced any issues with it. Clean up is easy; appearance of the final product is better than expected -- just a lighter shade of gray than the surrounding surfaces. October 10, 2011
Rated 2.0 out of 5.0 by A total hassle to apply The caulking does have some sand (or something) in it that should make it stronger and bond better. However this caulking is a hassle to apply. In general I have found this brand to have easy to use caulking but this formula I will not use in the future. Once I pulled the metal rod back away from the tube the caulking wouldn't stop flowing. This was a problem when I was trying to smooth out what was just applied as the caulking kept flowing out of the tube and dropping to the ground. I do not like caulking that does this and other Red Devil formula's I have tried will stop very quickly. The caulking itself may hold up but due to the hassle factor I'll be skipping this specific mix. July 28, 2015
Rated 5.0 out of 5.0 by Great paintable concrete sealer If you need the ability to paint over the concrete sealer then this acrylic caulk works great. The cracks are filled, sealed against the weather and it takes paint. April 28, 2015
Rated 4.0 out of 5.0 by worked well, color a little on the light side. worked well, color a little on the light side. would use again. October 4, 2011
  • 2015-10-08T09:45:09.065-05:00
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