0645 Concrete Repair Patch, Cement Crack Filler, 5.5 Oz Squeeze Tube, Pre-Mixed, Pack of 1, Gray, Made in USA

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.

Easy to use and very strong crack repair for concrete pavement. Works great solid as a rock.

Don't know if this comes in different colors but it's very easy to use, good quality and consistency. Has a bit of a brighter grey color but used a bunch of this on foundation and patio. They should make larger tubes. Good cement product pre-mixed and ready to use. Very easy.

this patch works really well, applying it in small layers works best, I had 2 cracks on a vertical surface and it stayed in place, it didn't develop cracks when drying, and you can push it into the crack easily

This sounded too good to be true, but it's actually easy to use, and does a nice job filling little cracks and holes. I'm a renter, and have found that if I complain about little problems I might get an increase in my monthly bill. But, I was afraid bugs would make winter homes in the cracks around my door way. This isn't an elegant fix by any means (probably could be if someone wanted to take a lot more time), but it fills in openings in just a second or two, and I found it very easy to use.

The Red Devil 0641 Concrete Repair Patch itself is excellent — no issues with the product at all. However, Amazon’s packaging and delivery were responsible for the damaged container I received.The shipping box was far oversized — roughly six times larger than the 1 gallon bucket — and the only packing material inside was a small amount of paper that was poorly insufficient to keep the container from rolling around. A heavy bucket like this needs proper stabilization, not a few loose sheets of paper.Because of the inadequate packing, the bucket slammed around during transit and arrived cracked open, with product spilled inside the box. Thankfully, because I ordered more than I needed, I still have enough to complete my project.This was not a product defect — it was a packaging failure. The box also had no “Fragile” or “Handle with Care” markings, which would have alerted the delivery driver to treat it appropriately.Amazon needs to address this immediately. Heavy, breakable containers should never be shipped in oversized boxes with minimal padding. This is a preventable issue that affects customer satisfaction, creates unnecessary waste, and increases the risk of claims.Great product — but Amazon must improve packaging standards for items like this.

I had a piece of sidewalk break and could have become a real problem. This product worked really well. It does have a light grey color that stands out. In a few days of people walking on it and some rain runoff it will blend in. The most important thing is it is strong and very easy to use.

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 timeTime will tell how it holds up, but price seems fair. So far, very pleased

SUPER, masilla en tubo para reparar cemento o yeso, es moldeable y seca en horas, los resultados son impresionantes, pues queda fuerte como si fuera cemento

I have concrete bird baths in my garden. One developed pit like holes and the water just drained out. This was easy to apply, dried fast and hard. No more leaks!! Very pleased, and so are the birds!!

Works great solid as a rock

Top

Works well and strong