1. Visiting from the US? Why not try DIYnot.US instead? Click here to continue to DIYnot.US.
    Dismiss Notice

fixing plasterboard straight to concrete ceiling

Discussion in 'Plastering and Rendering' started by jordy_boy, 11 Dec 2011.

  1. jordy_boy

    jordy_boy

    Joined:
    28 Feb 2007
    Messages:
    142
    Thanks Received:
    1
    Location:
    Kent
    Country:
    United Kingdom
    Hi everyone wondering if you could help please

    I've just had a porch fitted with a pitched roof put over the top of an old existing concrete flat roof. this now means that I want to fit plasterboard directly to this old concrete ceiling. The problem is I can't afford to lower the ceiling enough to even put batons to fix the board to so I am wanting to fix it directly to the ceiling. What is the best way to do this? Can I use some of those masonry screws to fix the boards? Tapcons or walldogs? I think is the names

    Many thanks
     
  2. Sponsored Links
  3. cherryred

    cherryred

    Joined:
    7 Dec 2011
    Messages:
    39
    Thanks Received:
    6
    Country:
    United Kingdom
    How about plasterboard adhesive.....dot dab. Might do the trick
     
  4. dougalhouse

    dougalhouse

    Joined:
    11 Oct 2005
    Messages:
    133
    Thanks Received:
    1
    Location:
    Bournemouth
    Country:
    United Kingdom
    How about painting with blue grit leave overnight or longer until it dries then bonding coat then skim over or as cherryred said; dot and dab.
     
  5. jabuzzard

    jabuzzard

    Joined:
    31 Jan 2009
    Messages:
    278
    Thanks Received:
    23
    Location:
    Fife
    Country:
    United Kingdom
    Something like screwfix 12531 with a 4mm masonry bit say 81471. Might be worth considering 9.5mm plasterboard as well if high is an issue. A bit expensive but it will do the job.

    Alternatively you could try plasterboard adhesive spread with a floor tile adhesive spreader, and stick it straight on assuming the concrete ceiling is level.

    However I would have thought your best bet if height really is an issue is to get it plastered directly on the concrete.
     
  6. Sponsored Links
  7. jordy_boy

    jordy_boy

    Joined:
    28 Feb 2007
    Messages:
    142
    Thanks Received:
    1
    Location:
    Kent
    Country:
    United Kingdom
    Thanks for the replies everyone. I forgot to mention the new roof extends further than the old one so there is part concrete ceiling then a void with beams to fix to so that's why I didn't plaster straight onto the ceiling.
    the ceiling is pretty good for level so I might just go for the adhesive option then as I will have the beams to fix part of it to which will help hold it.

    Also I can board it with one sheet but it will be very awkward getting it in the porch so I was thinking splitting it in 2. Will that be ok or do you think I might get a crack on the join because of the different backgrounds.

    Thanks again for your help
     
  8. jabuzzard

    jabuzzard

    Joined:
    31 Jan 2009
    Messages:
    278
    Thanks Received:
    23
    Location:
    Fife
    Country:
    United Kingdom
    If you possibly can use one sheet of plasterboard. If you can't make sure the join is not at the boundary of the concrete and beams or you will almost certainly get a crack.
     
  9. jordy_boy

    jordy_boy

    Joined:
    28 Feb 2007
    Messages:
    142
    Thanks Received:
    1
    Location:
    Kent
    Country:
    United Kingdom
    ok thanks I will try for one. But if I do need to split it the join will go at right angles to that anyway.
     
  10. NickB_99

    NickB_99

    Joined:
    25 Oct 2008
    Messages:
    1,166
    Thanks Received:
    141
    Location:
    Cheshire
    Country:
    United Kingdom
    With a void you could still go for the full plaster if there was a possibility of getting a full strip of plasterboard in the recess that would make it flush with the surrounding concrete. I agree that in this case, covering the full area with p/board is probably your easiest option.

    I've never used drywall adhesive on a ceiling, but have used it on walls and the stuff is quite 'slippy'. In that you need additional p/board spacers at the bottom to prevent the boards sliding down the wall to the floor. This would be my only concern with using on a ceiling. Boards are not light and you're relying on wet adhesive initially to hold and keep level.
    I would suggest if you do use the adhesive, maybe consider some small-ish screw-in frame fixings e.g. screwfix 33429. Then would be kind of belt & braces to make sure your boards well stuck and level.
    Where you screw into the joists with drywall screws I'm sure you'll be secure in that area.

    Agree with the jabuzzard a join will be fine if you need to, and as discussed at right angles is best. Just need to ensure scrim tape is used on the join prior to skimming.
     
  11. DIYnot Local

    DIYnot Local

    Joined:
    3 Sep 2019
    Country:
    United Kingdom

    If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

    Select the supplier or trade you require, enter your location to begin your search.


    Are you a trade or supplier? You can create your listing free at DIYnot Local

     
Loading...

Share This Page