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How long after taping drwall can I paint?

1404 Views 4 Replies 3 Participants Last post by  Matthewt1970
I used 90 hot mud and AP mud. How long do should I to wait?

I live in southern california
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I think the 90 is drying time. All the joint compounds emit heat when drying due to the chemical reaction. The quicker drying ones can get quite warm. You can tell with normal joint compound when you can sand and paint it by discoloration that is moisture in it that hasn't evaporated yet.
Overnight is usally fine or untill it is all a uniform color.
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