Repairing or sealing a crack in a house basement wall

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    Repairing or sealing a crack in a house basement wall

    So I have a crack in my basement wall I need to seal up. No water ever comes through it whenever it rains. The ground covers most of it and it leans away from the house.

    I knew there was a crack in it when I bought the house over 20 years ago but the previous owner had caulked it up. Soon after I moved in, I finished the walls in my basement by furing them out with 2x4’s and insulation, plastic and drywall.

    I had to remove the drywall in this area due to new utilities going in and around this area. That’s when I noticed the crack had widened open from the house setting over time. It starts under a window they originally installed in the basement wall when they built the house.

    I’m looking at these epoxy injection kits out there to seal it up right. Some have ok feedback and some are seeing low star reviews

    anyone know a good trustworthy kit that’ll do the job without breaking the bank?

    Im looking at this kit I found but I don’t know how good it is to use.

    Check out the deal on Easy-Peel DIY Crack Repair Kit | Epoxy | 10 ft. at RadonSeal Concrete Products Store

    #2
    Flex seal
    Big Labia Matter

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      #3
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        #4
        If the Crack is getting bigger you may need to do some wall anchoring in addition to sealing it up.

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          #5
          Originally posted by DMG View Post
          If the Crack is getting bigger you may need to do some wall anchoring in addition to sealing it up.
          My completely un engendered way to fix it would be to get a piece of 1/4 or 3/8 plate maybe 16" wide that spans from the floor to the top of the crack. After injecting the crack with whatever you want I would drill a bunch of 5/8 holes up each side of the plate and epoxy in 1/2" all thread into the concrete as deep as I could. It may not actually help the crack at all but it sounds good and you will never be able to see it again.

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            #6
            Originally posted by 2big bronco View Post

            My completely un engendered way to fix it would be to get a piece of 1/4 or 3/8 plate maybe 16" wide that spans from the floor to the top of the crack. After injecting the crack with whatever you want I would drill a bunch of 5/8 holes up each side of the plate and epoxy in 1/2" all thread into the concrete as deep as I could. It may not actually help the crack at all but it sounds good and you will never be able to see it again.
            I just did it at my shop by anchoring 7/8 all thread to concrete blocks I poured about 18 feet away and a foot below grade. It sucked but was neccesary.

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              #7
              If it's a block wall, straighten it first. Then nock a hole about mid point every 3 or 4 sections. Run a piece of rebar up, tie to rafters, run piece down to ground (overlapping). Fill cavity with concrete smoothing over hole in process. Fill crack with mortar.

              With it cracking out and settling vertically, I'm betting you've got a broken footing. Really should be fixed
              Last edited by Huntmaster; 07-19-2020, 01:18 PM.

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                #8

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                  #9
                  Originally posted by Huntmaster View Post
                  If it's a block wall, straighten it first. Then nock a hole about mid point every 3 or 4 sections. Run a piece of rebar up, tie to rafters, run piece down to ground (overlapping). Fill cavity with concrete smoothing over hole in process. Fill crack with mortar.

                  With it cracking out and settling vertically, I'm betting you've got a broken footing. Really should be fixed
                  Only thing I’m going to do is fill the crack and that’s it. I live in a very rocky area and only get down around 3pm before bedrock. Dig around 10” or so then start pulling up chunks of rocks before bedrock. I’m not at all concerned about it getting much worse over time.

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                    #10
                    Depending on how wide the crack is you could trowel in some hydraulic cement, it's all I've ever used and it works great. You could maybe get a pastry bag and squeeze it in too. If you haven't ever worked with it, work fast and don't ix too much at once!

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                      #11
                      Another vote for hydraulic cement

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                        #12
                        I'm a big fan of Sika products. Fixed a patio block wall that was settling and cracked. 8 years in and still looks good. Sikadur® Crack Fix | SIKA. They have a lot of other products for concrete and masonry as well. Home Depot carries some of them. Have fun.

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                          #13
                          Originally posted by dave_dj1 View Post
                          Depending on how wide the crack is you could trowel in some hydraulic cement, it's all I've ever used and it works great. You could maybe get a pastry bag and squeeze it in too. If you haven't ever worked with it, work fast and don't ix too much at once!
                          I also fixed one in a poured wall with hydraulic cement. Put a V down the crack with an air hammer and filled it up. Been about a year.

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                            #14
                            In my experiences cracks in basement walls are from the wall pushing in. Either from water, too long of span with no pillasters, or in our case frost. Toss a striaght edge up there and see what the walls doing. If it is because it’s pushing in no fix will be good until you remove the pressure.

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                              #15
                              Originally posted by Landslide
                              I had to remove the drywall in this area due to new utilities going in and around this area. That’s when I noticed the crack had widened open from the house setting over time. It starts under a window they originally installed in the basement wall when they built the house.

                              Originally posted by Landslide View Post
                              I’m not at all concerned about it getting much worse over time.
                              Ummm.... Seems like maybe you should be?

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