Drywall – How long does setting-type joint compound have to dry before priming


I put the final skim coat of 90-minute hot mud on the walls this afternoon, how long should I wait before priming? I've seen everything from overnight to 3 days, and the manufacturer's website doesn't have a number.

Using Sheetrock Brand Easy Sand Lightweight Setting-Type Joint Compound:

Going to use Zinsser 1-2-3 primer if that helps at all.

Best Answer

I usually give it a full day to dry. In general drywall type compounds turn to a lighter color when they dry so you can gauge from that if it is too soon to paint over.