Paint on Plaster

[sparrowebb]

We have recently had our ceilings smoothed by a plasterer and I would like to know what paint I am to use as an undercoat.

[derekpara]

It all depends on what you mean by 'paint.'  If you intend to have an oil based finish in, say, matt or eggshell, then I would recommend an oil based plaster primer -  after allowing the plaster to dry out for a week or two. If, as is more likely for ceilings, you wish to finish in emulsion paint then first apply a coat of emulsion thinned with an equal measure of cold water to act as a sealer ( reduces suction/absorbtion) followed by two or three coats of your chosen emulsion finish.or you can buy a special plaster sealer which makes following coatings easier to apply less like trying to paint a sponge !  Good luck.

[jake-the-peg]

Fresh plaster is pretty absorbant you might be well advised to seal it before painting with a dilute solution of PVA glue

here's some more tips

http://www.femalefirst.co.uk/homeandgarden/1942004.htm

[mika jones]

you can use either a proper primer or a thin coat of emulsion depending on what you intend to do later.

[Champagne]

Definitely seal the plaster before painting it.

If you paint directly onto the ceiling then you will use twice as much paint. Undercoats are fine, but the best sealant would be to use wallpaper paste with twice as much water added than recommended. Paint straight onto the plaster and allow to dry fully before painting with emulsion.

[Champagne]

Sorry sparrowebb! To answer your question properly, if you use my version of the sealant then you can paint with emulsion straight on top of this.

[charliep88]

isnt the process AL FRESCO paint on plaster .perhaps your home will be another Sistine Chapel  old chap.