Getting Ceiling Boards Level

[CHarr]

Having taken down a dividing wall between toilet & bathroom (to make one bigger room) I have gaps in the ceilings, with joists showing, and the existing PB also has horrible textured paint on it. I'm going to put new PB sheets (1220 x 900) over the existing ones and then skim, but I'm concerned about getting the joins level.

I was thinking about using PB adhesive to bed the sheets into, so that when I screw the boards into place I can compress the adhesive dabs slightly and get the sheet joins exactly level. Is this OK, or should I just screw up tight to the boards above and hope for the best?

 

[NickB_99]

Having taken down a dividing wall between toilet & bathroom (to make one bigger room) I have gaps in the ceilings, with joists showing, and the existing PB also has horrible textured paint on it. I'm going to put new PB sheets (1220 x 900) over the existing ones and then skim, but I'm concerned about getting the joins level.

I was thinking about using PB adhesive to bed the sheets into, so that when I screw the boards into place I can compress the adhesive dabs slightly and get the sheet joins exactly level. Is this OK, or should I just screw up tight to the boards above and hope for the best?

May depend how far you are out. mm's vs cm's?
A pic may help too.

I would have thought packing with drywall adhesive wasn't the best way to go. The wood joists will flex over time and the adhesive could crack out later. I'd have thought better packing with some strip wood at the joists, then screwing right through with drywall screws.

Plan where you want your boards up front - if you can get whole boards to span the gap also, that would be good. Stack them like you would bricks, if you know what I mean (NOT with joins all lined up in both directions).

You can probably take out a mm or so when the skim is applied.

 

[CHarr]

May depend how far you are out. mm's vs cm's?
A pic may help too.

I would have thought packing with drywall adhesive wasn't the best way to go. The wood joists will flex over time and the adhesive could crack out later. I'd have thought better packing with some strip wood at the joists, then screwing right through with drywall screws.

Plan where you want your boards up front - if you can get whole boards to span the gap also, that would be good. Stack them like you would bricks, if you know what I mean (NOT with joins all lined up in both directions).

You can probably take out a mm or so when the skim is applied.

The ceiling is only 2.5m x 2.6m, so I don't have all that many choices about staggering the boards unless I have more pieces than necessary. I don't want to end up with a 'tiled' effect, with lots of joins that could crack in the future. Ignoring the small sections of exposed joists (where the old partition walls were) the ceiling appears to be quite flat, and I don't need to have any of the new joins unsupported over the gaps, so perhaps I should just screw up tight and make sure the joins are well taped before they are skimmed?