I have a manufactured home (it's less than 15 years old), and we're having a problem our metal insulated exterior door. When temperatures dip below freezing, the door freezes closed. The inside of the door frame has a metal lip across the top and that is where it freezes. Last winter it was bad enough that we had ice on the inside top of the door. What can I do to fix this short of building another room on the back of the house? We live in middle Tennessee so it's not like we have really cold winters, but I am worried the condensation will cause the door frame to rot. As far as I can tell it seals just fine, but when it's below freezing you can walk by the door and tell the temperature change as you walk by.
Thanks for your help,