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Red Devil 0641 Concrete Repair Patch, Cement Crack Filler, Pre-Mixed, 1 Gallon, Pack of 1, Gray, Made in USA

  • Based on 7,257 reviews
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Availability: In Stock.
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Arrives Friday, Jul 17
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Size: 1 Gallon


Style: 1 - Pack


Features

  • REPAIRS CRACKS AND BREAKS IN CONCRETE: Premixed formula makes repairs easy
  • DRIES A LIGHT TO MEDIUM GRAY COLOR: Ideal for lighter shades of concrete
  • WON'T SHRINK OR CRACK: Provides maximum flexibility for a permanent repair
  • INTERIOR OR EXTERIOR USE: Can be used inside or outside
  • WATER CLEAN UP: Cleans up easily with soap and water. Made in the USA

Description

Pre-Mixed Concrete Patch is a ready-to-use concrete patch for the repair of holes, cracks, breaks and other imperfections in concrete or masonry surfaces. Not recommended for areas subject to vehicular traffic.

Material: Blend


Brand: Red Devil


Style: 1 - Pack


Item Weight: 400 Grams


Item dimensions L x W x H: 7 x 7 x 8 inches


Brand Name: Red Devil


UPC: 075339007556


Unit Count: 128.0 Fluid Ounces


Global Trade Identification Number: 56


Number of Items: 1


Part Number: 0641


Model: 0641


Item Type Name: Pre-Mixed Concrete Patch, 1 Gallon


Manufacturer: Red Devil Inc.


Water Resistance Level: Waterproof


Item Form: Pre-Mixed Concrete Patch - 1 Gallon


Compatible Material: Concrete


Item Weight: 400 Grams


Item Dimensions: 7 x 7 x 8 inches


Style Name: 1 - Pack


Color: Gray


Surface Recommendation: Tub


Material Type: Blend


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Friday, Jul 17

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Easy, Clean, and Effective Concrete Crack Filler for Targeted Repairs Easy, Clean, and Effective Concrete Crack Filler for Targeted Repairs
Size: 5.5 oz Style: 1 - Pack
The Red Devil 0645 Concrete Repair Patch is one of the most practical, no‑nonsense crack fillers you can keep on hand for fast structural touch‑ups. The pre‑mixed formula is the real advantage here—no measuring, no dust, no mixing ratios to get wrong. You squeeze it out, tool it into place, and it immediately behaves like a proper cementitious filler rather than a thin caulk. It adheres well to concrete, masonry, mortar, and even works for filling small holes in stucco, making it a versatile repair option for both interior and exterior surfaces. Once cured, it dries to a hard, sandable finish that blends cleanly with surrounding material. For hairline cracks, it flows smoothly enough to fill without shrinking; for wider gaps, it layers without slumping. The 5.5‑oz tube is ideal for targeted repairs like steps, patio cracks, foundation lines, garage floor blemishes, and small stucco imperfections where a full bag of patch mix would be overkill. Cleanup is simple with water while still wet, and the cured patch accepts paint without flashing or discoloration. If you need a reliable, ready‑to‑use filler that performs like a small‑scale concrete patch without the mess of mixing, this tube delivers consistent, repeatable results. ... show more
Reviewed in the United States on January 4, 2026 Reviewed in the United States on January 4, 2026 by mvepaoijg90r8

  • Good stuff — EZ application & EZ cleanup
Size: 5.5 oz Style: 1 - Pack
Like a large tube of thick toothpaste but grainy - super EZ to apply; perfect consistency; not runny, not too thick. I’m ordering more. Color is lighter than I’d like; a light gray, not quite as dark as cement. Simple clean up. Caution though, it starts to dry rather quickly so smooth it out quickly so you don’t have to go back a second time Time will tell how it holds up, but price seems fair. So far, very pleased ... show more
Reviewed in the United States on May 2, 2026 by jz

  • Good buy!
Size: 1 Quart Style: 1 - Pack
Works very well. Color is lighter but works great! Dries pretty quick too.
Reviewed in the United States on February 23, 2026 by La Xiong

  • Fairly EZ to work with. Must let dry well between applications Fairly EZ to work with. Must let dry well between applications
Size: 5.5 oz Style: 1 - Pack
The patch worked out well. For holes/cracks deeper than 1/4" or so, you may need to apply two or more coats after setting up. It's sandable too! The color is more of a white vs. grey. Hoping the colors will blend over time. I may need to sand a bit more and re-apply. Overall it's much better than the 1/2" hole before ... show more
Reviewed in the United States on May 2, 2026 Reviewed in the United States on May 2, 2026 by Dan S

  • As described easy to use
Size: 5.5 oz Style: 1 - Pack
Works and repaired a few concrete outdoor items . I rebought to add to some brick as around mailbox and it is perfect product and easy to use
Reviewed in the United States on May 31, 2026 by 2sweet4u

  • Works ok, container it comes in is bad
Size: 1 Quart Style: 1 - Pack
Stuff works pretty well to fill in gaps, holes, and cracks in cement. I used my finger to "smash" it in tight places then smooth it out. I'm currently letting it dry on some outdoor concrete in the middle of February so I'm hoping it cures ok. The container itself had a cut or split in the plastic which caused a hole on the side/top near the lid, and this caused about 1/4 of my entire tub to become hard and unusable. So I'm disappointed in this obviously. ... show more
Reviewed in the United States on February 16, 2026 by Northwest Dad

  • Works great..easy to use
Size: 1 Gallon Style: 1 - Pack
Putting on a few coats over front porch where the concrete was wearing down.. Spread easy....best to keep a shallow container with water and spackle putty knifes in it. Keep cleaning them with the water to help ensure a smooth finish.
Reviewed in the United States on May 22, 2026 by Ronald D.

  • Good Product - Read My Tips For Using It Good Product - Read My Tips For Using It
Size: 5.5 oz Style: 12 - Pack
Seems like a good product when you don’t want to hassle with mortar/cement mix. Agree with one reviewer who said product doesn’t come out of the tube without a good bit of effort. I think this is partly due to the water content in this pre-mixed variety, which seems pretty low. I didn’t add any water before applying and I also decided to use my fingers to work it into the block foundation I was repairing. That work nicely, much better than the spackle knife/trowel. My trick to get the product out of the tube if you have trouble is this, cut the nozzle as close to the main tube body as you can, use your foot with a shoe or boot on and then slowly apply pressure and product will easily dispense with your weight. I then used my fingers as needed to apply, but you could try applying with a tool. I just found that not great with this mix and cleanup is easy with water so no worries. I did detect a smell of slight acetone or something, I assume something which makes the cement more pliable to get it out of the tube. It’s not real strong but it is there. I would buy this again. I used 3-4 full tubes on my project and since I bought the 12 pack, I have several left. I would recommend using a whole tube at a time as concrete could be very tough to work with after recapping. I have a trick there too. I always take a little cling wrap and put it over the nozzle, then put a small rubber band around that toward where the nozzle meets the tube, only then do I cap it. That seems to typically keep all my tube caulk/cement pliable a long time after resealing. Hopefully product will dry fully and give me many good years of secure foundation. ... show more
Reviewed in the United States on October 26, 2025 Reviewed in the United States on October 26, 2025 by Tim Bilsky

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