Carl writes from Madison, Florida: "I am looking at getting a 40 foot shipping container for extra household storage. These are the containers that you see on semi trucks, trains, and ships. The ones I am looking at have wooden floors and steel walls and roof. I am in Florida and would like to insulate it from summer heat. Maybe run a small A/C to cool and dehumidify. (It is not unusual to have 94 degrees F and 94 % humidity). Size is roughly 40 feet long by 8 feet high by 8 feet wide with swinging doors on one end. No insulation is present. What can I do?"

Answer: You need to treat the container as if you are remodeling a house. You will need to frame some walls inside the container and insulate with fiberglass. Due to the high humidity in your region, you will have to call your local building code official about vapor barrier recommendations. High humidity areas sometimes don't require a vapor barrier or even place it to the exterior side of the wall.