Staining a textured fiberglass door
Hope this is the right forum! (I'm usually on the decor forums)
We have a fiberglass front door textured with a wood grain pattern. It is under a covered porch, with no storm door.
The door is about 2 years old. It was originally finished with a liquid stain. Our builder thought (incorrectly) we'd want it done with the same stain as our interior cabinets, which was much, much lighter than we actually wanted. We've never been happy with it and would like to re-stain it a darker color or paint over it. The liquid stain was never finished with top coat. Whether we paint or stain, we will be going with a much darker color (paint will probably be black, stain would be as close to a dark chocolate color as we could get).
What would you advise we do in terms of prep work? I've read that since it never had poly applied, we can just paint/stain without any prep (other than wiping it down with mineral spirits, and of course removing hardware and masking off glass). True?
I've also read that if we go the stain route, use a professional gel stain such as Old Master's, apply with a high quality brush, and then dry brush the excess stain off (wiping brush on rag between). Is there a better method? It's hard to find consistency in technique.
The guy who originally stained the door left two runs behind (where wet stain ran, and then dried). How do we get rid of those? Sand it down? Paint thinner?
Total novices with fiberglass doors, though I have a fair bit of interior painting experience.