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How long before painting on new plaster?

14 replies

KennetLass · 22/07/2015 10:58

I've read several different things about the length of time that you need to leave it before painting on new plaster from 'until it's dried' to 4 weeks. Does anyone have any experience with this?

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SylvanianCaliphate · 22/07/2015 11:00

You need to let it dry and then prime it.

Was it just a skim or browned too?

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SylvanianCaliphate · 22/07/2015 11:01

Skim is the pink stuff that goes over plaster board, evens out bumps.
Browning is the thicker stuff that goes on bare bricks.

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KennetLass · 22/07/2015 11:04

It was a skim.....

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SylvanianCaliphate · 22/07/2015 11:07

24 - 36 hours it will be light pink and dry, then size it (wallpaper paste diluted) or it will just soak up the paint.

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SylvanianCaliphate · 22/07/2015 11:09

Size is just an undercoat, you can use pva glue and water too. It's just a base to stop the plaster being porous.

If you have had damp or any mould issues leave it 36 hrs to be certain.

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KennetLass · 22/07/2015 11:13

Thank you, good to know I don't have to wait too long!. No damp issues. I've seen decorators saying that you shouldn't use PVA but a diluted emulsion for the first coat of pain

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superram · 22/07/2015 11:14

Use watered down emulsion- piglet john says so!

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SylvanianCaliphate · 22/07/2015 11:17

Pva has gone out of fashion because if it's too strong (too much glue) it can make the paint look patchy.

A small bag of wallpaper paste is cheapest and easiest, it h a s the mix quantity on the back but I just use pva because it's in the shed

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KennetLass · 22/07/2015 11:20

I just realised I said first coat of pain....I'm hoping it won't be! Thanks everyone...I take it piglet john knows best :-) Worst thing will probably be the high ceilings...

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