I'm replacing an exterior door, with a new prehung door. So I'm removing
the old frame. The problem (I see now) that there is a window right next to
the door (the kind that is a foot wide and as tall as the door.) When I
took out the old door trim, I realize the door frame is not that stable.
The brick molding seems to actually have stabilized the door frame, as the
molding was nailed into the house frame. Is this sort of door supposed to
bought as a unit with the window, or can the window be left in place and
only the door replaced? I also wonder how I will nail in the new door
frame. There isn't much solid to nail into on the side that has the
window - no door framing stud, just a strip of trim that separates the door
frame from the window. So the new door frame would only really be strongly
supported on 3 sides. Or am I missing something?