Back Door - Most people buy doors with jambs assembled together, called pre-hung doors. Installing a pre-hung door is usually easier than trying to fit a new door into an existing frame.

Brick homes are especially prone to having jambs that cannot be removed. For some reason, there are builders that will install the doors, then apply brick right over the outer part of the door frame. In this case, removal would require the jambs be broken apart in small sections for removal, and the new frame would have to be modified in order to fit.

Hanging a door can be a frustrating experience. The problem is usually due to not keeping the new frame square and plumb. Sometimes, it can be quite difficult to get a good fit due to the opening being out of alignment. Houses settle with time and door openings can move around a lot.