My window panes/trim, baseboards, and doors upstairs are peeling where the previous owners painted over the existing paint. The paint scratches off in places and soapy water removes some as well in rubbery strips. Either the under paint is oil based or they didn’t de-gloss the surface of an acrylic gloss paint. I believe it’s the later.
If the under paint is acrylic is there a primer that would bond the two layers together so I don’t have to continue sloughing off the top paint. It’s a tedious and tiring process, but I found a latex paint remover for fabrics, upholstery, and carpets that does a decent job with a wire brush and wet rags. It took three weeks to remove paint, prime, and repaint one bedroom. I have three more to go and am looking for a miracle. Do you have one please?
Unfortunately, there isn't a primer that can penetrate through one layer of paint and bind it to the other layer. Who ever comes up with a true working solution will be rich!
You will have to remove as much of the loose paint as possible. Then prim the entire surface before painting.
I had the exact same problem…we lived with the cracking paint for 2 years before we decided to tackle it…we bought a heat gun and it works wonders…I spent 3 hours with the gun and a small scraper and got almost all the room done! Every room in our older home was treated the same way so I have a long way to go but now It's a lot easier!! Worth a try!