Skim Coating Over Paint?
Any issues skim coating over the old paint? I was told that this is ok, but I always thought that the paint would degrade the new layer of plaster. Does anyone have any expertise in this?
Any issues skim coating over the old paint? I was told that this is ok, but I always thought that the paint would degrade the new layer of plaster.
Does anyone have any expertise in this?
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the best way will be to install atop of existing a new layer of thin sheet rock
Issues…
Sometimes the moisture from the new skim coat will be absorbed by the old wall and de-laminate, for lack of a better word. The bond becomes weak between layers of old paint/previous skim coating and may produce a bubble.
The best way to prevent this from happening is to scrape any loose material or weak peeling paint and then prime the wall with a quality oil based sealer/primer.
The lead issue prevents dry sanding or scraping. Worth testing.
I don’t understand what the options would be. You either skim coat over the old paint or you build a new wall. How can you not skim coat over the old paint??
If the paint has any gloss, or has absorbed any oil (kitchen ceiling for example), you are going to want to roll on a coat of plasterweld before you skim coat.
You know it’s old paint, probably lead paint.
Don’t sand it. Use primer.
This should be ok. Just rough up the surface (sand it) it first so that it adheres well.