I have an old house with a lot of trim. Baseboards, wainscoting, crown molding, built-in cupboards. The walls are probably 50% trim. I also have a lot of old, solid wood doors.
From what I can tell, all of this was originally clear-coated with a varnish or something similar. Then at some point, a previous owner painted over it all, but didn't sand or strip the varnish, they just painted over it, several times.
I had the house repainted when I moved in, but quickly found that the paint would come off the trim really easily, which is when I noticed the varnish. It's been less than a year and there are already a lot of bare areas on the trim and doors.
Stripping down all of the trim and doors, or replacing it all, seems like a monumental task in this house. So I'm wondering if there's anything I can do at this point, maybe something I can coat the painted wood with, that would help a new coat of paint bond to it better?