Storing tins in a damp environment

[sethorly]

I can't keep my tins stacked on shelves in my house because there's 6 of us and just not enough room. We are lucky to have a double garage with good ventilation so moisture doesn't seem to be an issue and we don't have rodents. The tins are just by themselves on cheap ikea shelves around the edge of the garage walls, arranged by use-by-date. These are mostly only high-calorie tins - we avoid anything low calorie as we don't have the room for huge numbers of cans. We only have 3 month's worth of food at the moment at 2k calories per person per day, but this is slowly increasing (and we're rotating it haphazardly). I would like to top it up with a huge cache of freeze-dried food, but this would cost a bit too much at the moment. The tins don't seem to degrade at all but the oldest is only 2 years old - I'm fairly recent to prepping.