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plastering over painted walls

Postby barnard » Tue Apr 24, 2007 11:10 pm

What mix of pva to water should I use before skimming a wall.I have been using 50/50 but when I skimmed over a wall with gloss paint on (from years ago) I found the plaster wouldn't fix to the wall and peeled off in a few small places.
Could this be the pva mix or would you recommend sanding the painted wall first before pva.
I have seen sanding tools in specialist plasterers suppliers shops is this what they are for?
Please help!
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Postby thedoctor » Wed Apr 25, 2007 10:32 am

Don,t plaster over gloss at all. See our paint stripping project to remove the gloss paint. 50/50 is fine for sealing plaster. To plaster over paint its better to put it on undiluted and then plaster when its tacky.
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