Hi There. My new house has a metal garage door which has started to flake away in patches. You can scrape patches of it off - right down to the bare metal with a an ordinary hand scraper, but most of the paint is intact. I was planning just to rub it down then paint over the existing paint with a metal primer and then gloss, but am a bit concerned that after i have painted it it will continue to flake away as the existing paint is not sticking to the door (maybe because the wrong primer was used). Any suggestions ? Should i remove all the paint first before painting the door ?
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