You mentioned sanding down and repainting. If that process involves shooting a primer and working your way up thru a fresh paint job, your exposed areas will be ok, after drying out. I'd avoid extreme focused heat, rather let it air dry, inside or outside. If I misunderstood and your not repainting, I'd at least shoot a sealer ( thinned primer) before repainting just the spots. PPG makes a nice two part epoxy primer that can also be used as a sealer.
David Breeze
------------------
Pantera Rebody Kits