Sand off the existing coat to key the surface, degrease them, apply a coat of white primer, followed by two coats of a good quality oil based undercoat, finish with a good quality gloss paint. And btw, are the doors flush, (ie fully flat) or panneled doors? Either way, a mohair roller can be used to speed things up. Dont use a fluffy radiator roller, especially a new roller sleeve. They cast hairs like a dog even after being washed.
At last, someone with a bit of savvy.



