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I hung drywall ceiling in my basement. I got impatient/lazy and decided to "finish" the project already by painting it with Kilz PVA Drywall Primer, even if the mudding & taping is not perfect yet.

I would say some taped joints need one more layer of mud & light sanding to be completely hidden (especially the outside corners with the CGC Perfect 90 tape (If I used normal folded paper tape, It would've shown less).

I haven't painted it with Latex. The primer is white and flat, which I think looks OK for now.

Should I decide to "fix" it, can I mud over the PVA primer?

isherwood
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Rollo R
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3 Answers3

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You can absolutely mud over cured primer. (Or cured finish paint, for that matter.)

Use all purpose mud (not a setting compound) and scuff the primer gently with 120 grit.

Aloysius Defenestrate
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Polyvinyl acetate dissolves in water and the mud is water based too. There is a possibility of the mud detaching and falling off. (Happens all the time) I would recommend sealing in the primer with a waterproof latex with texture. The texture will help the mud adhere better.

Michael Markham
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Kilz PVA Drywall Primer is a product to be sold to amateurs that have no clue how drywall should be finished. It is not a cure all. The product can be utilized by spraying it on preexisting drywall to ensure the compound adheres the wallboard. Exp. if one wants to remove a textured ceiling and wants to apply joint compound afterward I would suggest using it to insure the compound adheres to the wallboard instead of "flaking" after the paint prime coat has been applied.

Muddauber
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