Originally Posted by trip286
I wouldn't do the garage, it just wouldn't feel right to me. If you get that safe, and it's bolted to the concrete slab, and you get a humidity control thingy like a goldenrod there shouldn't be a problem.
I mounted my safe in the garage and installed a goldenrod. Even in the moist Pacific NW, I've had no problems with surface rust.
If you do this, purchase a couple of good quality rubber door mats and install them between the concrete slab and the safe or the concrete curring process WILL rust out the bottom of your new safe. FYI-Concrete slabs can take up to 100 years to completely cure and stop off gassing moisture so do this even if your house is old.