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Cracks along edge of ceiling and walls

Discussion in 'Plastering and Rendering' started by LJ1711, 2 Nov 2020.

  1. LJ1711

    LJ1711

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    I'm considering putting in an offer on a house but most rooms have cracked sections around the edge of the ceiling where the plasterboard seems to be pulling away from the walls. The property is a 3 storey terraced built in 2002. A couple of the rooms also have floor to ceiling cracks down the corners of the walls, the picture is the worst one. Will flexible filler do the trick or would I need to get something more advanced done to it? Trying to get an idea of the cost involved before deciding if and what to offer to buy it.
     

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  3. johnny2007

    johnny2007

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    It's all cosmetic.
    Those cracks can be fixed by a good decorator.
    I recently saw a plasterer use a metal corner bead for internal corners and I thought it was a good idea.
    Why don't they do that as standard?
     
  4. JohnD

    JohnD

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    I don't know the cause, but I fixed some, by injecting expanding foam from above, into the small gap between the wall, the final joist, and the plasterboard, after hoovering clean and moistening with a sprayer. The foam holds the board in place and has enough flex not to crack, and you can use caulk to fill the gap once the foam has set. I used fire foam, just in case.

    If you happen to like coving, that will also hide the crack
     
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  5. because its not a good idea
     
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  7. johnny2007

    johnny2007

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    Can you explain please?
    Doesn't it make the internal corner stronger?
     
  8. Wayners

    Wayners

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    Plan B will be a corner tape. Use paper and I seal tape with a bit of thinned pva sometimes. Youtube will show how, but sealing tape is my way
     
  9. not in my eyes. in a solid plastered and skimmed wall it would end up a car crash as there’s no flexibility in a metal bead internally ,so when movement through thermal expansion and contraction occurs the corner will destroy itself. hence flexible scrim tape.
    for tape and jointed walls paper tape or reinforced steel paper corners are the norm , they end up looking like the ops house though, usually through settlement or cheap shoddy workmanship. although it’s a crappy system to start with and only good for housebuilders to complete newbuilds quickly.
    just my opinion
     
  10. johnny2007

    johnny2007

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    It makes sense, thanks.
    Go to have a look at those corners in a couple of years to see the damage.
    Any repair I ever done I used scrim tape and no cracks.
    Mind you, I didn't ever attempt to plaster, only patches here and there.
    I leave it to the pros.
     
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