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Peeling Paint, just seal it?

Posted: Fri Apr 19, 2019 12:57 pm
by BrokeIt
The paint is peeling and chipping off the wall. Can I just seal over this with Zinnser Bin?
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Re: Peeling Paint, just seal it?

Posted: Fri Apr 19, 2019 1:29 pm
by A. Spruce
You shouldn't need to seal it, simply scrape off what is loose/peels easily, float it smooth with drywall topping compound, and you're ready for paint.

Re: Peeling Paint, just seal it?

Posted: Sat Apr 20, 2019 5:12 am
by Clarence
Looks like you have Plaster walls. High moisture will cause the problem as in the last picture.
If the house has been closed for a period of time with no temperature control paint will peel off plaster.

Re: Peeling Paint, just seal it?

Posted: Sat Apr 20, 2019 1:59 pm
by Aaron
Zinsser B-I-N is a great primer for that sort of thing, I think. It's a white pigmented shellac, and it covers stains and has amazing adhesion. I would use a coat of B-I-N first, let it dry, then put Zinsser Bulls Eye 1-2-3 primer over that before putting a couple topcoats over that.

If the old paint flaking off creates an undesirable appearance of an uneven surface, then Spruce's suggestion of topping is good. But first I would score the old plaster with a utility knife to create some tiny grooves so the topping compound can key into the plaster. Make like a 1 inch by 1 inch grid of grooves. Then delamination is less likely to occur in the future.