Does your buddy say the fiberglass chips or is it the paint applied over it?
I've not painted many fiberglass doors but don't remember seeing any of them chip. IMO that would take some significant abuse. If it's paint chipping the most likely cause is either improper prep or substandard paint.
I've not painted many fiberglass doors but don't remember seeing any of them chip. IMO that would take some significant abuse. If it's paint chipping the most likely cause is either improper prep or substandard paint.