Painting on bare new plaster board

[cider]

Hi. I have drylined internal walls and put up new ceilings to cover up artex. I saw that new board should have a sealer on it to act as a vapour barrier. Unfortunately its not cheap like everything currently. Is this necessary and or is there an alternative. Previously I have just emulsioned straight over the plaster board
Advise appreciated

 

[yartin]

I hired plasterer to skim artex textures ceiling few months ago, First coat, I applied diluted emulsion with water 10% then another 2 coats of emulsion.

I waited 3 weeks for skim to dry.

 

[cider]

I hired plasterer to skim artex textures ceiling few months ago, First coat, I applied diluted emulsion with water 10% then another 2 coats of emulsion.

I waited 3 weeks for skim to dry.

Thanks but not relevant to my scenario

 

[yartin]

What's the new ceiling made of?

I have done same with plasterboard ceiling in an office.

 

[cider]

What's the new ceiling made of?

I have done same with plasterboard ceiling in an office.

Plasterboard. I have previously treated it as plaster, mist coat then emulsion but saw on tutorial it should have a sealer / vapour barrier.

 

[JohnD]

Why? Is it a bathroom?

Who made the tutorial?

Don't put glue on it.

 

[yartin]

My skimmed ceiling was bathroom, I didn't use any sealer just diluted emulsion but used Dulux bathroom paint which is sufficient.

 

[opps]

If you have dot&dabbed or screwed over existing walls, why you need a vapour barrier?

 

[RandomGrinch]

Plasterboard is a really good surface to emulsion straight onto.
Although if I've had a wall that has needed a lot of filler/drywall compound, I have used Zinsser Gardz, or Dulux plaster sealer. I find it gives a good surface to paint on, whilst not reactivating the filler.
It is expensive though!

 

[oldbutnotdead]

If you need a vcl it's usual to put polythene behind the pb. Carry on with yr mist coats and then emulsion