I recently came across Brady's Underground storage outside of Pittsburgh.
Its an old limestone mine below ground.Looks good for storage.
Two options given
1 Constant temp of 65 degrees with controlled humidity of 63 percent for $63 per month or
2. Uncontrolled place that is 54 degrees and not humidity controlled for $29
Obviously the lower rate is attractive. Last winter I just left it at the RV resort and left the fantastic fan vents open under special covers that allow that.
So that did not control humidity either.I know you can put in some of these options that absorb humidity but I was thinking venting fresh air is better.
Im interested in others thoughts For those of you interested the website is
www.bradysbend.com