I live in an 80 yr. old house that has had it's front porch enlosed. The original front porch is still there, covered in a vapor barrier and ratty carpet (that I am soon going to replace with linoleum tile)
So, the floor is still slightly slanted towards the front of the porch. The walls are drywalled.
Right above the front door frame, in the center of the frame, a big visible crack has formed. One slide of the crack is slightly elevated, and it goes in a straight line upwards and then cuts across to the side a little and then continues upward. Is this a foundation problem? or is it because this area, which is seperated from the rest of the house by what was originally the front of the house, is totally unheated, and the winter weather is taking it's toll?