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HELP!! skim coating over a painted and papered wall

Posted by deven_t (My Page) on
Fri, Nov 10, 06 at 21:28

I am remodeling a bathroom in a 1960's house and the walls are in rough shape. They had been painted several times and then covered in wallpaper. I have managed to remove all of the wallpaper and the glue using hot water and a bit of dif. Some of the layers of paint also came off with the paper in certain spots. Now I am left with the dinged and damaged (but painted) walls underneath. What more do I need to do to the walls before skim coating them. I have read that I need to apply an oilbased sealer, but can I do that over latex paint? What about that GARDZ product by zinsser, will that go over the latex? Can I just skim over the painted serface if I skuff it with sand paper?Also, after I have skim coated with joint compound, what kind of primer and paint do i need to use (latex or oil)? Do I need to used a sealer after skim coating?
Thanks


Follow-Up Postings:

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RE: HELP!! skim coating over a painted and papered wall

Use an oil-based (alkalyd) primer that is compatable with waterbased paints.
The primer will penetrate the water based paint as well as cause any loose edges to curl slightly. Repair these areas, prime again, skim, prime then paint.


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RE: HELP!! skim coating over a painted and papered wall

Guardz works fine - no specific need to use an oil based primer if fumes are a concern. Sanding the walls is a good idea, then guardz, then a little more sanding if necessary, skim, skim, skim again if you want it perfect, prime and finish with premium quality materials. Zinsser's Kitchen and Bath paint seems to work well in high humidy environments.

Or

If the walls are not painted with semi-gloss or have torn drywall paper showing, simply sand the walls and start skimming. Priming is usually not necessary over flat or low sheen paints. Do use a high quality primer over skim coated walls prior to painting with 2 top coats.


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RE: HELP!! skim coating over a painted and papered wall

GARDZ will serve all your needs. GARDZ prior to the skim coat if there is any damaged wall area. skim coat, then GARDZ again. GARDZ is a primer and can be painted over with your topcoat.

there is seldom a need for oil primer or paint inside the home.

Zinsser Perma White as Randy suggests is a very good choice.

Michael


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