Any potential problems fiberglassing and painting the inside of a sealed enclosure?

[jus2sho 10+ year member]

Thinking of doing something weird inside a sealed enclosure. Would the fiberglass work or will it all fall apart? Also, any problems with putting mirrors in a sealed enclosure? Sorry for all the newbie questions!

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[Loudrango112 10+ year member]

OK well... first off... when something is sealed, its sealed. If you want to put a mirror IN a sealed box... which you wont be able to see. Go ahead... now fiberglassing the inside, is this to keep it "sealed" or to give it a "brace" or just for the hell of it?