If you have just built a storm shelter or already had one in your house when you moved in you need to make sure it is ready to be used. Since you never know when you will need it, the room should have all of your emergency supplies stored inside. However, if the room is humid or holds humidity, your storm shelter is no longer safe. Humidity causes mildew and mold to form which in turn promotes bad health, illness, and aggravate allergies. It will also ruin things like paper products, clothing, and pictures.
To remove humidity from the room, the first thing you need to do is find the source. The room should be sealed against leaks and standing water removed.
Tip 1: Proper Ventilation
If you are building your own shelter, you should install proper ventilation using HVAC ducts and exhaust fans. If it has already been built, try to install these without damaging the room.
Tip 2: Portable Dehumidifier
You can install a built-in dehumidifier or simply buy a portable one. The dehumidifier should be chosen carefully based on the size of the room. If you get one too small, it will not work properly. The portable units need to have a power source and should be kept running continuously. The portable units will cost you anywhere from 50 dollars to 1000 dollars.
Tip 3: Condensation Crystal Pack
Buy a condensation crystal pack. These work by emptying the crystals on a tray and placing the tray over a catch tray. The crystals soak up the moisture and the water drips into the catch tray which can then be emptied out. For an average size room, two or three kits should work. They can be found online or most commonly in boating areas. The cost is about 10 dollars each and they will need to be replaced every few months as the crystals melt.
Tip 4: Use Snow Removal Salt
A calcium chloride and magnesium chloride blend, otherwise known as snow removal salt can also be used. It only costs about seven to 10 dollars for a bag so it is economical. This is how you use the snow and ice melt. You dump a bag of the mixture into a cloth bag, like a pillow case. You hang that bag up and place a bucket underneath. The snow and ice melt collects the water and the water drips into the bucket and then you empty the bucket. These will have to be replaced after the snow and ice blend has melted.
Tip 5: Create Charcoal Filter
Another economical way to rid your storm shelter of humidity is to create a charcoal filter. This can be made with items you already have at home or can easily get. You will need a few coffee cans with lids or any type of container with a lid. Cut five or 10 small holes in the lids. If the lid/container is larger, more holes will be needed. Then fill the can with charcoal. You can use grilling charcoal and replace it monthly or the wood kind and replace it yearly. You will need a few of these to handle a normal sized room.