david86

Ah, that makes sense. I'll do some more investigations. It wouldn't solve the "taking up space" problem, but like the ingenuity!

Thanks for the info, very helpful. It does only support a couple of joists, but they run up to where the staircase is (there's a cupboard, with door, under the stairs too), so I think the supporting bit is still necessary? I should have added a slightly wider picture! Like this:

I recently moved into my new house and I am renovating throughout. I have a section of cavity wall that protrudes out into my kitchen, perpendicular to the main external cavity wall. After looking under the floorboards above, I've found half of it is supporting joists, but the other half just has plasterboard on top. Under building regulations is there any reason I can't remove half of the protruding cavity wall and patch brickwork into the main cavity wall where a hole will appear? Before After Photos