Vertical cracks in south facing corner of a 90s built house. Thermal movement or more sinister?

Discussion in 'Building' started by dssr, 4 Dec 2021.

  1. dssr

    dssr

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    Vertical crack going through brickwork, blah, blah, blah.

    Been requested to remove pics, thus thread has lost its context.
     
    Last edited: 9 Dec 2021
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  3. tell80

    tell80

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    None of the cracks appear serious enough to prevent the house buy - has any survey been done?
    The cracks look like thermal cracks?

    Are there any corresponding cracks inside the house?
    1993 is almost new build and the mixture of fittings suggests someone has since 1993 had an amateurish go at the drainage - its easy to test for drainage/gulley leaks.
     
  4. dssr

    dssr

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    @tell80

    No survey at this stage.
     
    Last edited: 9 Dec 2021
  5. ^woody^

    ^woody^

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    Thermal.

    Needs a movement joint or will just crack again if you renew the bricks
     
  6. dssr

    dssr

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    So, helibar and stitching would not offer a permanent solution?
     
    Last edited: 7 Dec 2021
  7. ^woody^

    ^woody^

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    The problem is the whole wall, the bricks, the mortar, not any particular component or point in time. The wall is susceptible to future expansion and contraction.
     
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  9. dssr

    dssr

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    I still don't understand why the same happened to the conservatory dwarf wall in the shaded area.
     
    Last edited: 5 Dec 2021
  10. RonnyRaygun

    RonnyRaygun

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    Agree, common to put bed joint reinforcement in bays and other smaller panels to prevent this.

    The corner one is more interesting as guidance suggests 12m between returns is OK for brickwork without movement joints.

    It’s very minor and unlikely to get any worse.
     
  11. Notch7

    Notch7

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    as the crack is an even width, that indicates horizontal movement -ie thermal
     
  12. RonnyRaygun

    RonnyRaygun

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    Small panels are more susceptible to differential thermal movement, especially when integrated with a larger panel.
    Bed joint reinforcement is often specified in small sections to prevent this.
     
  13. dssr

    dssr

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    Structural engineer booked.
     
    Last edited: 9 Dec 2021
  14. dssr

    dssr

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    Structural engineer failed to show.
     
    Last edited: 9 Dec 2021
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