Not sure if this should appear in this forum, but the query is on painting fibreglass.
I'm buying some body kit/replacement bumpers which are manufactured in fubreglass as opposed to plastic. The paint shop I've been to see say that fibreglass can sometimes 'bubble-up', during the drying time.
Is this common, or am I perhaps talking to the wrong chap? Should perhaps it air-dry rather than go in the oven...?