Also, why is this bag of DampRid frozen?

Humidity has long been an issue in my garage. To help keep tools from rusting, I’ve been using microwave-rechargeable desiccant packets in my toolbox drawers and cabinets. They seem to work pretty well.

This garage used to have mild flooding issues, but last year I finally got around to landscaping the surrounding area to help pitch rainwater away from the slab. It’s helped, but the old, cracked concrete floor still sweats pretty badly sometimes. Could be the recent swings in temperature we’ve been having, causing condensation. Or maybe it has something to do with the porosity of the floor which has never been sealed.

A few weeks ago, I finally got around to sealing up some of the cracks. It didn’t help with the humidity, but it sure does make sweeping easier.

A couple of weeks ago, we had several days of rain, and the floor was sweating hard. I’ve been hesitant ot get a dehumidifier, as it wouldn’t be a good year-round solution for this unheated, uninsulated garage. So one of the things I’ve been doing is using DampRid hanging bags. I don’t use them very often, but the recent rain reminded me to hang a fresh one up.

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Now when I say “fresh”, i mean that it was still in a sealed package. It’s beena couple of years since I bought it though. Didn’t think it would matter, but I started to notice that the moisture collecting in the bag was freezing, even in room-temperature weather.

I don’t recall having that happen before while using this product, unless it was during the winter, a time when I would expect to see some ice anyway. Must be some kind of chemical reaction. Is it normal, or a side effect of the bag’s age? Again, it had been kept in its original sealed packaging up until a couple of weeks ago, and the packaging was still intact when I opened it. There were no signs of it collecting any moisture until i exposed it to the garage environment, so I’m not sure what to make of that.

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But back to the main topic of humidity- I think a dehumidifier would probably be the best course of action, even if I can’t use it during the winter (freezing coils and all that). Are adsorbents/absorbents the best course of action for freezing weather? What measures have you taken, or are taking, to combat moisture in your garage?