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

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.

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

Used this to patch a moderately large chip in a sidewalk. Wish they sold a smaller pint size since I didn't need this much. This is the smallest size you can get as far as I know, which is 1 quart or 4 cups. It comes in a plastic tub container with instructions to use a screwdriver to help you open and a hammer to close it. You can open and close it by hand, but I get why it might sometimes arrive open by mail since the plastic lid is easy to deform if something lifts it up. My plastic tub arrived fine and the material was not open or dried out. I got the package with the plastic knife set. You could probably buy this cheaper in a big-box store, so you're paying extra for the convenience of delivery. It's a lot lighter in texture than I was expecting. Other reviews call it "fluffy," which I would agree is the best description of it. I thought it would be denser, but it has the texture of cake mousse. I do wish it was a little denser so it would be easier to scoop and pack into deeper cracks. It does have a tendency to stick a little to gloves and spreading implements. I used the plastic knife set, but maybe it's easier to spread with a metal knife. I was worried it wouldn't set due to the texture, but it seemed pretty hard and dry 24 hours after the patch. I did apply it on a summer day where temps were between 70s and 80s. Didn't shrink, but it seemed to sink down a bit and "level" into the crack after 24 hours. I could probably do another layer, but I'm waiting to see how it holds up to rain and whether it will "melt off" like some negative reviews mentioned. So far, so good though.

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

I used this to repair a vertical concrete area at the base of my garage which cracked. Using this patch product was easy; just smooth it out on the crack, straight from the tube. Very helpful for an essential maintenance job to keep water from getting into the concrete which leads to much bigger problems with cracking and shifting of the slab.

Watch when opening if dropped container will leak out and make a mess. The container leaked stuff out into the box and down the side of the container. Not fragile. Beware!!!!

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

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.

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

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I had an old concrete planter which is maybe 3 feet tall. Over the years it had cracked, and sections fell out near the base. I was about to discard it, but thought I'd try a tube of this stuff. I applied it with my hands (using gloves) and it almost immediately dried enough to hold the broken pieces back in place. I ran it along the chips and cracks and worked it in. The next day, it was fully dry and I touched up with additional paste. I know it has to cure for a while, but after an overnight drying the planter seems pretty sturdy, and I'm so pleased I was able to fix it - not sure if the planter will survive past this season, but at least I got another year out of it, maybe more. After using this paste (I bought the tube not the tub) I replaced the top and it did NOT dry out or clog the nozzle, I was easily able to squeeze more out.