I had the same condensation issue with my garage that is built into the side of a hill. The concrete walls take until July to heat up enough to stop the condensation. It was so bad I thought the contractor didn’t seal the outer walls properly and I was getting leaks from the outside. After confirming it was due to condensation, I was going to add 1” foam insulation but a bit reluctant as I had just finished sealing and painting the walls and would have required adding sheetrock to cover the foam. I ended up installing a dehumidifier instead. I was surprised at the results. No more rusty tools and no more puddles on the floor. My electric bill did not take a big hit either.

Might work in a steel container as well. Just a thought!


Phil
Moderator, The Engine Shop, Interiors and Project Journals

1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube
Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc Brakes
Project Journals
Stovebolt Gallery Forum