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Drywall vs Plaster in Bathroom

Discussion in 'Plastering and Rendering' started by Adam78, 23 Mar 2018.

  1. Adam78

    Adam78

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    Hi,

    I have a bathroom in a 1940s terraced property (approx 2.5 x 2.5 meters) which needs tiling. However the tiler has advised the plaster on two brick walls (one is party wall and the other is rear external wall with a window) should be removed because its loose and should be redone with dot and dab plasterboard.

    My question is which is preferable in a bathroom. Having it removed and re-plastered using wet plaster or use dot and dab method using a dry wall?

    I understand drywall is quicker but my concern is it will leave a cavity and the existing solid walls arn't exactly very sound proof.

    any tips advice, pros and cons of each method on how to approach this task would be appreciated.
     
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  3. Mr Chibs

    Mr Chibs

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    Everyone seems to drywall it these days, I have drywall in my bathroom and it's been fine for 20 years! I think the plasterboard was 'glued' onto the old plaster with board adhesive (d+d stuff).

    If you are having floor to ceiling tiling, you will need to check it will support the weight of the tiles if you do d+d it.
    Tiles weigh from 14Kg per metre + adhesive & grout.
    If concerned about weight, you could put some battens on the wall, fix boards to battens etc.

    I recently used a primer on some plasterboards, after being skimmed.
    It leaves a water resistant surface (looks like it's been varnished!) £9 from wickes, a light blue liquid, by NX, can't remember name of it, will check.
    https://www.wickes.co.uk/Norcros-Multi-Purpose-Primer-1LT/p/167675
     
  4. Adam78

    Adam78

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    I dont think dot and dab on to old plaster would be adequate because as you say it may not support weight of tiles. If I batten the walls and fix boards to battens it will reduce the size of the room but possibly still an option i suppose.
     
  5. Mr Chibs

    Mr Chibs

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    Sorry, was suggesting, once old plaster was removed/made good.

    A 25x50mm batten would suffice, possibly thinner 18x38, both used for roofing, so you'd only be loosing say an inch, you'd have nice flat wall though.:D
     
  6. Adam78

    Adam78

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    if I'm removing old plaster, would it not be better to just re-plaster it considering they are only two small walls? How long does wet plaster normally take to dry?
     
  7. endecotp

    endecotp

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    Consider “tile backer” boards, rather than plasterboard. They are more moisture resistant. Either cement-based (“hardinacker” or similar) or insulated (“marmox”). This is most important in wetter areas e.g.behind a shower.

    Wet plaster will take several weeks to dry out.
     
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