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ceiling cracking

  • 18-02-2014 1:42am
    #1
    geoweb2k14
    Registered Users Posts: 70 ✭✭


    Hi guys, I'm living in a bungalow and in the sitting room the ceiling is cracked along a joist. Two sheets of plasterboard are joined on the joist and well fixed but no matter how many times I rake it out and refill it, the crack appears again after a few weeks. Should I screw extra timbers to both sides of the joist and then screw the slabs from below to these extra timbers? All answers welcome.


Comments

  • #2
    plasteritup
    Registered Users, Registered Users 2 Posts: 477 ✭✭plasteritup


    geoweb2k14 wrote: »
    Hi guys, I'm living in a bungalow and in the sitting room the ceiling is cracked along a joist. Two sheets of plasterboard are joined on the joist and well fixed but no matter how many times I rake it out and refill it, the crack appears again after a few weeks. Should I screw extra timbers to both sides of the joist and then screw the slabs from below to these extra timbers? All answers welcome.

    Have you scrim
    along the joint


  • #3
    geoweb2k14
    Registered Users Posts: 70 ✭✭geoweb2k14


    plasteritup wrote: »
    Have you scrim
    along the joint

    There is scrim tape along it bit I've noticed an old crack in the ceiling in the kitchen which is back to back. The crack looks like its running straight througj. Could this be subsidence??


  • #4
    muffler
    Registered Users, Registered Users 2 Posts: 46,316 ✭✭✭✭muffler


    Have you checked if the purlin is propped on to the joist by any chance?


  • #5
    geoweb2k14
    Registered Users Posts: 70 ✭✭geoweb2k14


    muffler wrote: »
    Have you checked if the purlin is propped on to the joist by any chance?

    I haven't checked but I'm assuming that its not ment to be but rather propped up on an internal wall. Am I right in saying this? I will check when I get home from work and keep you posted. Thanks for your help.


  • #6
    North West
    Registered Users, Registered Users 2 Posts: 439 ✭✭North West


    Hi geoweb
    What span is the joist running. What size is the ceiling joist. What centres are the joists at. Is there adequate bridging between joists. What is the insulation in attic like around the joist. Can you put photo of joists in attic from around immediate area.
    Timber will deflect slightly with heat and cold. Is the joist sized properly for the span in room. The joists need to be bridged properly.If the insulation is not in right you will have a cold spot. The timber could be getting cold in attic and warm in room if so you will have movement in timber. Also the joist centres could be too big.
    NW


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  • #7
    geoweb2k14
    Registered Users Posts: 70 ✭✭geoweb2k14


    North West wrote: »
    Hi geoweb
    What span is the joist running. What size is the ceiling joist. What centres are the joists at. Is there adequate bridging between joists. What is the insulation in attic like around the joist. Can you put photo of joists in attic from around immediate area.
    Timber will deflect slightly with heat and cold. Is the joist sized properly for the span in room. The joists need to be bridged properly.If the insulation is not in right you will have a cold spot. The timber could be getting cold in attic and warm in room if so you will have movement in timber. Also the joist centres could be too big.
    NW

    Will post pics and measurements later. Thanks for your help.


  • #8
    vinnie13
    Registered Users, Registered Users 2 Posts: 494 ✭✭vinnie13


    I take it that it's a old bungalow?older houses tend to sag and cause cracks


  • #9
    geoweb2k14
    Registered Users Posts: 70 ✭✭geoweb2k14


    vinnie13 wrote: »
    I take it that it's a old bungalow?older houses tend to sag and cause cracks

    Is 12 yrs built classed as old??


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