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BillCA · January 11, 2014, 09:55 PM

A safe in the garage, sitting on concrete is not normally subjected to rapid swings in temperature and humidity. The concrete will act as a heat sink and keep the safe cool. If the seals are tight on your safe a dehumidifier or similar will keep the air moisture content low.

The trick is to avoid opening a cool or cold safe on warm, humid days. The warm, moisture laden air rushes in and begins to condense on cool surfaces. Installing a low-watt heater or even a 15W incandescent bulb to equalize the internal and external temperatures will help.

January 11, 2014, 09:55 PM	#8
BillCA Senior Member Join Date: November 28, 2004 Location: Silicon Valley, Ca Posts: 7,117	A safe in the garage, sitting on concrete is not normally subjected to rapid swings in temperature and humidity. The concrete will act as a heat sink and keep the safe cool. If the seals are tight on your safe a dehumidifier or similar will keep the air moisture content low. The trick is to avoid opening a cool or cold safe on warm, humid days. The warm, moisture laden air rushes in and begins to condense on cool surfaces. Installing a low-watt heater or even a 15W incandescent bulb to equalize the internal and external temperatures will help. __________________ BillCA in CA (Unfortunately)