The building, and what it does to the job
In this neighbourhood most of the housing is flats. Nothing sits on a standard module. The old tops have to leave the way the new ones arrive, and a laminate run is easier to remove whole than to carry whole. A strip-out, not a refit.
Many of these had a bathroom or a WC built onto the far end of the addition, so the room now ends at a stud wall rather than at the original brickwork. Pieces are stood on edge for the turns and carried flat for the straights, and that sequence is agreed before anything comes off the van. Movement joints in the shell stay movement joints.
Chimney recesses give you a 300-400mm deeper pocket in an otherwise standard run, which is worth using for a wider top rather than boxing out to a false wall.
