I pulled up the tile in my bathroom and discovered that the sub-floor was partially rotted near the bathtub, under the toilet. Based on the tile/mortar, it looks like whoever did this floor last mortared over/into the already damaged subfloor to cover up the fact that it was damaged. It looks, from what I can tell, that the damage goes under the wall.
My questions are:
- What's the ideal way to cut out the damaged section? The parts I can get to, I would just use my circular saw with the depth set properly, but for the edges along the tub insert and the wall, (especially the tub edge, which runs perpendicular to the joists), how would I get close enough? I've heard reciprocating saw and toe-kick saw suggested by a few people I know.
- Do I need to worry about the damaged subfloor that goes under the wall? If so, how would I go about removing/replacing the damaged subfloor there?