My master bathroom used to have a vinyl floor and a fake modesty wall separating the shower/toilet zone from the vanity zone. My wife and I aren't as modest as when the house was built in 1965--heck, we don't even sleep in separate beds!
Anyway, I pulled up the flooring and got rid of the fake wall. I pulled up the 2x3 sole plate, leaving a gaping hole down to the wooden sub-floor.
Do you have any suggestions as to what I should do here?
(a) When tiling over, just make sure the tiles are large enough to span the gap--the tile should be strong enough
(b) Fill it up with leveling compound
(c) Fill it up with a concrete patch
(d) Screw in a 2 1/2" wide piece of durock and tape and mortar the gaps
(e) Pull up the whole floor and re-do it all, or
(f) Torch the place and start fresh with the insurance money