Help with repairing crack/hole in concrete block wall


Old 04-01-13, 05:01 PM
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Help with repairing crack/hole in concrete block wall

Hey all,

I have a basement that is developing a crack in which you can actually see sunlight coming through. It's almost cracked all the way from floor to ceiling. I believe those are concrete blocks. What is the best and then the easiest way to repair this? I hope I don't have to rip out or rebuild the wall. This is also supporting my house.

Sorry for my rookie question, I just want to make sure this is repaired right.

In the pic below, the light you can actually see coming through the crack, and it extends to about 2 feet above the foundation all the way down the wall.

Any help would be appreciated. Thank you!

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Old 04-01-13, 05:34 PM
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You can push some hydraulic cement in the crack and that should do ok BUT you need to keep an eye on it to make sure there is no more movement. Hopefully it's just a bad settlement crack and won't get any bigger.
Old 04-02-13, 10:33 PM
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Another option is to seal the crack using a low-modulus epoxy gel, working it into the crack with the edge of a putty knife before troweling over the crack surface with same. Don't use high-modulus material, as that will just re-crack when the wall is subject to future movement, regardless of how slight it may be. If appearance is a concern, you can pretty things up by throwing some coarse, color-matched sand against the repaired areas before the epoxy sets up.

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