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We want to texture several walls that have semi-gloss paint on them. Will drywall mud adhere to the paint or do we need to use a particular primer first?

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  • I would do a small test. Clean with TSP, apply a dab of mud, let dry and then try to chip it off. – Steve Wellens Oct 30 '20 at 4:43
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    No nononono. You will need to sand the sheen down, then use a bonding primer, then texture. – Jimmy Fix-it Oct 30 '20 at 5:05
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I have roughed up the surface with red scotch brite pad or by sanding (scotch brite doesn’t make as big a mess).

Then wipe with a damp rag to remove the loose particles after that the mud will stick I have done this hundreds if not thousands of times on my own home and remodels, rewires where I had to patch holes used to drill and pull wire. + Jimmie fix it method may be a better way but takes time and I have not had failures.

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