Masonry Partitions on Timber Floorboards - How to Insulate Underneath Floorboards? Re-generate an old or tired space and give it a fresh breath of life. Click here for answers, information and tips

[simonL]

I have recently bought a 1930's semi and want to insulate the GF. I have discovered the masonry non-loading bearing partitions are built off the floorboards. They are NOT located directly over floor joists which run in the same direction.

How do I get these floor boards out to allow access underneath to insulate without having to knock the wall down?

[Mad110]

Is there enough space under the gf to cut an access hatch and put in rigid foam insulation from below?