Drylining a ceiling - what about the edges?

wafers

After doing lots of reading on it, I've just drylined our bathroom ceiling, due to (previously) damaged plasterboard above.
I've lined it in 9.5mm, but have since read I should have used 12.5mm? Here's hoping it will be ok?
Also, how could anyone advise on how to finish the edgeds of the plasterboard, where they meet the tiled walls? The gaps are wider in some places than others (it's my first time, but it looks good overall ). Someone recommended decorators caulk, but I'm worried it will shrink if I load it into a larger gap. Should I just fill the larger gaps carefully with Easyfill (the same filler I'm using for the tapered edge join in the centre of the boards)
Any help appreciated! :j

bridgedino

Best finish is to get it skimmed by a plasterer. Will give it a great finish

jcb208

Correct way is to use corner tape down on to the wall but as you have tiles already there you can either fill and hope it stays there or use decorators caulk which will be ok If the gaps are not to big

tony6403

wafers wrote: »

I've lined it in 9.5mm, but have since read I should have used 12.5mm? Here's hoping it will be ok?

Any help appreciated! :j

9mm ok for joists at 450mm centres with perimeter support. Better with 12mm if you have joists at 600mm centres.

wafers

tony6403 wrote: »

9mm ok for joists at 450mm centres with perimeter support. Better with 12mm if you have joists at 600mm centres.

Just measured, and the joists are 600mm apart. Not looking good

teneighty

Just measured, and the joists are 600mm apart. Not looking good

Sorry to say it but with the added humidity in the bathroom the plasterboard will probably sag. Your best bet is to rip it out and start again.

You might be able to save it by putting lots of noggins in above but that is probably more work than starting again.

Kiran

How big of an areas is it? You might be ok with 9.5mm if its a small bathroom. As mentioned above, the correct way to finish is with a internal corner tape however as you already have tiles up you could flush fill the ceiling boards and then as you have tiles you could get away with a silicone seal. A caulked joint will crack even in areas of low humidity so in a bathroom is doesn't stand a chance.

HTH

wafers

Right, update time. Thanks for all the advice above. I ended up sticking with the 9.5mm board and instead lowered it, went crazy with gripfill, then pushed it all back up again. It's not going anywhere!
Matey has since come along and filled all the seams really neatly (he's a dry liner by trade) and all I now need to do is rub it down slightly and paint it.
I'm now wondering which paint would be best - I'm aware plasterboard is very porous, and this is a bathroom I'm dealing with. Any particular suggestions?

mttylad

Yes, skim plaster then silk emulsion.

Dry lining in a bathroom is asking for trouble IMO.

(Unless you are going to give it a thick gloss coat - ewwww.)

traineepensioner

"Dry lining in a bathroom is asking for trouble IMO."

Not meaning to hijack but.....What are the alternatives? I've just pulled down an old lathe/plaster ceiling in the bathroom and was looking at replacing with 12.5mm plasterboard.... I don't really like the look of plastic cladding.

Cheers

Kiran

wafers wrote: »

Right, update time. Thanks for all the advice above. I ended up sticking with the 9.5mm board and instead lowered it, went crazy with gripfill, then pushed it all back up again. It's not going anywhere!
Matey has since come along and filled all the seams really neatly (he's a dry liner by trade) and all I now need to do is rub it down slightly and paint it.
I'm now wondering which paint would be best - I'm aware plasterboard is very porous, and this is a bathroom I'm dealing with. Any particular suggestions?

When I renovated my kitchen and bathroom I had to pull the ceilings down because they were in a terrible condition. I dry linned. Mist coated with matt emulsion (very slightly watered down) and then top coated with 2 coats of kitchen and bathroom white. It has been on for a few years and still looks good.

HTH