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Prime Joint Compound Repair before paint??

Prime Joint Compound Repair before paint??

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Old 07-13-20, 11:05 AM
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Prime Joint Compound Repair before paint??

I have a small area I'm repairing with pre-mix joint compound. Is it necessary for me to prime the J/C area before I paint? Is 24 hours enough time to let dry before painting? Thank you!
 
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Old 07-13-20, 12:47 PM
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Sheetrock mud is very porous. Priming first will give your paint a more uniform finish. Do all your mud work and prime the repair area. Then top coat with paint to match the room.
 
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Old 07-13-20, 12:49 PM
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Yes.

While you didn't ask, keep in mind most paints will make defects in your repair more obvious, not less so. It can help to assess the look with just primer on the spot to determine if more work is needed.
 
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Old 07-13-20, 03:15 PM
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Thumbs up Thank you!

Thank you! Appreciate your advice.

 
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Old 07-13-20, 03:20 PM
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The other think to remember, your sanded repair is now very flat and smooth, if you dont put down 2-3 coats of primer using a heavy nap roller and blending it out onto the non repaired area when painted it will stand out like a sore thumb!
 
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Old 07-14-20, 03:02 AM
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I often use thinned down joint compound to mimic multiple coats of rolled on paint - it's faster.
Repairs should always be primed! While a dedicated primer is best, if the repairs are minor it's ok to spot prime with your finish paint.

You want the j/c to be dry enough to sand before priming. The primer is usually dry enough to top coat within a few hours.
 
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