I'm getting ready to paint the wood trimming inside my home. The trimming itself is in good condition but the old paint has been peeling away for some time. Evidently it's due to the fact that no primer was used when it was painted last. Will applying primer over the old paint prevent future peeling of the new paint or do I have to remove the old paint first?
In some areas it's been sanded down and it's hard to tell. In other areas it appears to be latex and in pretty good condition.
I would sand the trim to remove the loose paint and then prime with an oil based undercoater (not a fast dry stain killer type)and then topcoat with an acrylic semi-gloss. The oil based primer will help to hold down the last coat of paint as it will give you a harder barrier over that old paint so when it gets hit or knocked it will less prone to peeling.
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