Crack repair - resin injection

Discussion in 'Building' started by beefster, 5 Sep 2010.

  1. beefster

    beefster

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    I have a 4 inch breeze block wall (Not Load bearing) which we found had a crack right through it when removing wardrobes. had a builder friend look and after 6 months with tell tales on it - no movement. looks like at some time there mad been a bad leak from bathroom on otherside - some water staining. No damp now found.
    Moving on now I am advised to clean the mortar away 6 inches either side of the crack - drill 8mm holes into the crack 3/4 way through block from the accessible side at 100mm spacing and inject masonary fixing resin, then fix mesh and plaster over.

    Query - Is this sound advice.
    What resin to use? From screw fix - Tarmac and masonary resin recommended.
     
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  3. ^woody^

    ^woody^

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    If it's not moving, then why bother with steel bar reinforcement?

    Its just a partition wall, and if this is a vertical crack is more likely a "once only" thermal crack, so I can't see why it needs all the work done to stitch it together

    Preventing the crack in new plaster would be the only concern - with your mesh idea or a strip of plasterboard
     
  4. beefster

    beefster

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    Didnt say anything about steel bar reinforcement???

    Standard plaster mesh wire over crack and plaster. This to be completed after injected resin set in crack?
     
  5. Deluks

    Deluks

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    Don't see the point in that? If you're gonna go to the bother you may as well put a steel bar in.
     
  6. ^woody^

    ^woody^

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    Oh yes.

    I just assumed that steel would be put in the resin as it normally would be, as resin is pointless on its own
     
  7. beefster

    beefster

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    Please feel free to advise how you would do it.

    Any advise welcome. As said thats how i was told to do it. If its wrong and you think i should do differant let me know please.
     
  8. stuart45

    stuart45

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    It's the steel that holds the masonry together. The resin just bonds the steel into the holes drilled. As ^woody^ said it's probably not needed for an old thermal crack.
     
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