Originally Posted by mojoracing
If you prepare properly, moisture wont be that big an issue. Make sure you use the vent when you shower and if boiling something on the stove, vent it as well. Dual pane windows are a blessing. I had a little gadget that told me what the humidity was in the coach and I kept a sharp eye on it.
Just being aware is a major thing. Unlike houses RV are generally not built with vapor barrier. On coaches with bat insulation I think there is a very great risk of filling the walls with frost (and ice!).
Watching the humidity closely and adjusting for it should mitigate the problem somewhat. Air movement and ventilating the moist air outside are critical. Tough to open a vent when the furnace is running and you have a couple electric heaters supplementing the heat.
I think there are some guidelines for exhaust fan to moisture producing activities like showering or boiling water but I do not recall them and they are for S&B. A factor of 10 comes to mind but that seems high.