Indeed. We have also replaced doors/windows, the latter having trickle vents. Floor has a permeable cover holding the insulation up and goes over the joists.

Indeed. We have also replaced doors/windows, the latter having trickle vents. Floor has a permeable cover holding the insulation up and goes over the joists. I think for the walls it'll be PIR boards. I can't insulate outside as it'd be out of character with the street.