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fixing plasterboard to soild block walls

  • 17-02-2010 7:49pm
    #1
    crazy600
    Closed Accounts Posts: 20 ✭


    advise please!
    I have a solid block wall that is plastered and painted, chase for electrics was run too wide, so builders spanned the chase with plasterboard and skimed across, now there is some movement between one of these spans, and cracks running, up, down side to side.
    best solution I think is to put up new plasterboad on the whole wall and skim.
    My question is: I've had two plastered come to price it , one wants to use mushrooms and the other one wants to dot and dab, which is the best method? or is it a matter of preferance for the plasterer


Comments

  • #2
    mp22
    Moderators, Business & Finance Moderators, Regional South Moderators Posts: 6,854 Mod ✭✭✭✭mp22


    Mushrooms will hold every thing to the wall,with dot and dab you are depending on the existing bond (if you are leaving existing plaster board up)


  • #3
    reefray
    Closed Accounts Posts: 14 ✭reefray


    Dot & Dab will not bond to a painted finsh. It will only bond to a rough or keyed background.

    When done properly tho it grips like a drowning man!


  • #4
    GreeBo
    Registered Users, Registered Users 2 Posts: 27,179 ✭✭✭✭GreeBo


    Whenever Im renovating I much prefer when the plaster has been dabbed on, as it comes off so easily...

    Mushroomed or batoned on is much harder to remove...
    That said Ive never had a dabbed wall fall down on me either.


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