I blamed my old shed for 2 years until my neighbor Doug in Omaha proved me wrong
I kept finding tiny rust spots on my Camaro every spring and I was ready to tear down the shed and build a new one for $6,000. Doug next door said to just check the floor first, so I did and found out my concrete slab was wicking up ground water the whole time. A $40 roll of foam underlayment and a cheap dehumidifier fixed it, and the car has been dry for 8 months now. Has anyone else had a moisture problem come from the floor instead of the walls?