Closets by Design designs, manufactures and installs custom organization units such as walkin closets, home offices, pantries, wall beds, garage storage & flooring and more.
Make sure that your attic is properly insulated. Make sure the seals around all windows and doors are in good shape. If you can see daylight air is entering and leaving as well.
Here is a product that is safe and non-toxic for waterproofing walls and even floors. They have various products for different needs. Hope this is helpful, good luck!
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