Yea, I dont think I would put plastic overhead. I used plastic to tape off when I sprayed primer on the black car and yes, it dries and flakes off. I have since changed up. I get painters paper which is kinda thin from Sherwin Williams to mask everything off. Plastic on the sides of a home made tent is fine. I dont think there should be any need for plastic on the ceiling. Mine was not so much to catch overspray as much as keeping outside crap from blowing in.
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