Do I need to use moisture resistant plasterboard on ceiling when wet plastering on top?

As per title: Do I need to use moisture resistant plasterboard on ceiling when wet plastering on top in bathroom?

Vaulted ceiling has Insulation backed plasterboard that is not moisture resistant. It's all going to be skimmed in the near future.

If it's going to be skimmed over, do I need to get someone to overboard it in green plasterboard before it's skimmed or not?

Thanks guys!

Asked by Lance on 12th Apr 2021
Expert Trade Answers
Best Answer
"Do not PVA the Plasterboard. Since when did we start putting PVA on Plasterboard?
I would just MR Board it and re-plaster to make sure."
Answered on 26th Jul 2021 - Member since Mar 2019 - report
"No, no moisture board. However pva diluted 3/4 part with water allow to stand 20 mins before plastering"
Answered on 29th Jun 2021 - Member since Oct 2019 - report
"This is not needed unless there is a damp problem ..normal plasterboard is perfectly suitable"
Answered on 27th Jul 2022 - Member since Jun 2022 - report
"Blue grit it plaster skim 1/2days after paint skim with moisture paint"
Answered on 2nd May 2021 - Member since May 2021 - report
"Hii nothing to worry about even normal plasterboard is OK..... Moisture once are being used in industrial areas or where the chances of high humid conditions and open shower styles...."
Answered on 1st May 2023 - Member since Apr 2023 - report
"You don't need it for the ceiling but if you are doing it on the walls, where more moisture is. then you may as well do the ceiling too. It's only a few pounds extra material-wise"
Answered on 12th Apr 2021 - Member since Dec 2018 - report
"It is a standard specification to use green moisture boards on bathroom ceilings these days.
You can get away without using green boards if the ceiling is being plaster skimmed but if it's been taped and jointed with filler than a vapour primer / sealer will subsequently help"
Answered on 3rd May 2021 - Member since Feb 2021 - report
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