Plaster Sealant or Just Watered down paint??

[steveb1964]

Hello,

Just had a new partition put up. Plasterboard then a skim.

Not sure If I'll be painting the walls or papering yet but the plasterer said what ever I do I'd need to put a sealant on. He said not to bother with the plaster sealant you can buy in a tin as it's expensive so just thin out some paint.

Question is what paint do I use for this? Undercoat, Emulsion etc?? Also I presume you use water so how much paint to water should I use for a newly skimmed wall?

Thanks

 

[jondecs]

Plasterer is right..
On bare plaster ; seal with a mist coat.. this is a thinned down coat of the emulsion you are going to use. On drywall/ skim I usually have to thin (with clean water) up to 40% to seal the plaster. Then one or two coats of a more thicker paint mix.

A non vinyl matt is prefered on new plaster. But if plaster is completely dry any emulsion would do.

Dont use pva. it works fine initially. But will cause big headaches laters.
good luck.