Before applying latex paint over oil-based paint, you must first prepare the surface by sanding, cleaning with detergent, and coating with a primer. The primer can be either oil-based or latex, but in either case it should labeled as a “bonding primer.”
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If you want to apply latex paint over oil paint you have to first prepare the surface by sanding, cleaning with detergent, and coating it with a primer. The primer can be oil or latex, but in either case it should labeled as a “bonding primer.”
The same is true for applying oil over latex. However, latex paints are more flexible than oil and many modern formulas are just as tough as oil, so it may be best to simply stick with latex for the new topcoat.
