I've got a brick and block wall in my kitchen, if i paint it now with masonary paint will it be easy to plaster over it in a few months or years?
Or would I be causing problems?
[george]
Plastering onto paint
Oct 08, 2017
15 Replies
[george]
No.
Yes.
Owain
what problems? because brick is porous and paint not? couldnt i PVA over the paint?
You might be okay scoring/scratching the painted surface to key the plaster to the brick, but it's probably a lot of extra unnecessary work.
Owain
I am not a plasterer, but I've seen underlying paint blister when plastered over. Sometimes the bubbles dry back, sometimes they don't...
PVA is the usual way - check it's sound, if not, wire brush then PVA :)
Its the way plasters would "glue and set" a painted artexed ceiling for example. Knock of the highest spots mechanically, roller with PVA, and the plaster onto it while still tacky.
(note this is for a skim coat - might not work so well for a full base coat of plaster!)
Wot he said.
IME artex will stick where plaster may not want to (plus it's a lot easier to use)
But artex is the spawn of the devil ;-)
Only if you texture it
If it's not textured, it's not artex is it?
Artex is the coating material itself, a cross between paint and skim-coat (so it has fillers added to give it "build").
The Artex I've used as a plaster substitute is a powder, not unlike PB joint filler. Speed is the essence of plastering, and I'm extremely slow, so the longer open time is a bonus for me.
That's the stuff.
I'm rubbish at plastering, but at a chimney-breast-sized area I've not had a problem with it going off too fast. Perhaps you're braver than me. :-)
Me too - and for that sort of area, I find you can actually sit around for a coffee between coats.
Now a 4m x 2.4m wall is about the most I can handle single handed - I've just got one on when it's time to wash up, mix and apply the 2nd coat.
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