Burnt fiberglass fix?

[Christin]

We just took the kitchen out of our scamp. After we removed the old nasty fridge we noticed that the whole inside of the kitchen body is burned for some reason. It had been painted over and the paint was bubbling up. We at first thought it was because of poor pre-paint prep but now we think it was heat. Is there anyway to fix burnt fiberglass or do we have to start over?

[carlkeigley]

Pulled this from a boat forum:

The toughest part of the repair is going to be getting the repair laminates to bond to the surfaces that have seen the fire damage. The soot and oxidation is going to be a real bear to remove to the point where you get an effective bond. In my experience, epoxy bonds better to dirty polyester than polyester does, but neither of them bond well enough to make a solid repair if there is any fire residue left. You are faced with having to do an intense amount of sanding to get a good faying surface. Since it will probably be less than ideal, epoxy is the choice by default.

Fiberglass Fire Damage - How to Fix? [Archive] - The Hull Truth - Boating and Fishing Forum

[Donna D.]

So, the problem is inside the refrigerator cabinet? Or the outside cabinetry? Have you tried to scrape off the paint to see if there's any discoloration? Maybe they just used some sort of paint that doesn't handle heat well....

[Christin]

Thank you Carl, that is really helpfull! The damage appears to be on the right side of the Cabinet, exactly where the fridge is facing a wall also the front over the top of the fridge. I sanded a little bit down, couldn't find any discoloration (only the yellowing from the age) the problem is those "bubbles" in the fiberglass. I just don't know if its worth the effort, it's also cracked on one side...