Will drywall compound stick to semi-gloss paint


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Old 01-17-24, 10:05 AM
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Will drywall compound stick to semi-gloss paint

I have to patch some cracks in my kitchen ceiling and the surface has been painted with semi-gloss acrylic (latex) paint. If I do some scuffing with fine sandpaper will the sheetrock mud stick? Or what other patching material would you recommend? Many thanks.
 
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Old 01-17-24, 10:11 AM
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Yes, a scuff sand should be all that is required.

That said, why are there cracks and have you considered using tape (paper or fiba-fuse, not mesh) on them?
 
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Old 01-17-24, 10:56 AM
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Depending on the cracks you have you really need to re-do the tape underneath. Often long straight cracks appear at the edge of the tape where it has come unstuck. If you just mud over the top the crack is likely to reappear.

I pick at the edge of the crack to find the edge of the tape. Then I pull or scrape the tape out where it's not stuck. Keep removing tape wherever it's not stuck, which could extend beyond the original crack. Then skim a coat of mud over the crack and press your tape into the wet mud and scrape over it with your knife. Then finish normally.
 
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Old 01-17-24, 11:15 AM
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Good advice, a pic or two would help us to give more advice.
 
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Old 01-21-24, 09:12 PM
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There are cracks because the house is old AND the walls and ceiling are plaster AND the subsoil is clay which shrinks and swells with rain AND the house is in So Cal thus earthquake country. The cracks are about 1/16th wide.
 
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Old 01-22-24, 03:01 AM
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Since it's plaster you might get by with just scratching out the cracks and then filling them with a setting compound like Durabond or EasySand.
 
 

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