[Trailer Trash 2]

You can have all the R values you want on the walls,roof,floor, ect ect. they will not convince me that there numbers are correct, I can put my hand in front of a plug on the rear cap wall and feel air comming out of the plug area, The windows are the biggest transfer of cold into the Monty, more than any other item in our trailers all that aluminum transfers from outside right through the inside mounting ring and center support for the frame on a cold night put your hand on it you will be surprised its like having a refrigerator coils on your walls, they need to go to plastic and it will stop a lot of that cold from comming in.
and the slides as others have mentioned need help in the R factor area.