Condensation happens when moisture (humidity) builds up in the air inside the trailer. When you get the TM sealed up tight, the moisture has no place to go, and eventually it will condense on any cool (not just cold) surface. The cure is to get the moisture out of the air. Products like Damp-Rid will help. If you have shore power, a small dehumidifier is easy. If you don't, then the solution is to open a window, open the vent on the ceiling, turn on the vent fan, and get a complete air change once or twice a day. Yes, it will get cold inside, so when you have finished venting, run the furnace or electric heater to warm the place back up. But the longer you collect moisture in the air, the worse the problem will get.
Bill
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