I've got a window that's currently external (in a bathroom) - I plan to build a garage on the side of the house next year which will cover the window. I'm guessing normally the window would need removing, breeze blocked and rendered but as the window will essentially be internal eventually, can I just leave the window in place and ply over it? (I'm planning to tile over the ply).
Or would this cause any sorts of issues with damp, planning regs etc?
Or would this cause any sorts of issues with damp, planning regs etc?