tonyjeffs wrote:
The house has small lead covered roofs over the two front bay windows,
separate from the main tiled roof. These are supported at the front by
the windows, and at the back by an original timber joist. They haven't
jacked one of the bay roofs up properly before removal/refitting
windows, and it has dropped a bit at the front, and is now a slightly
sloping roof.

That does not sound very good at all.