The waiting period before painting over Kilz primer depends heavily on whether you choose a water-based, oil-based, or shellac-based formula. Water-based options like Kilz 2 usually dry to the touch and can be recoated within one hour under normal room conditions. However, traditional oil-based or heavy-duty odor-blocking Kilz formulations typically require a drying window of two to four hours, and sometimes up to 24 hours for complete curing before applying the final paint.
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