Trees fall down, a retaining wall failed, the .1 mile driveway has storm caused grooves in it.For my current one, I have the worst MH in the park.  

aw come on @Adam Johnsonyoure taking my weekend groove way down.

If it is the thick tongue and groove classic cedar or pine plank paneling keep it!

Sometimes when screwing back on you need to use plumbers thread tape as the grooves are worn out to fill the gap so no leaks are coming out.Is the leak coming out of the handle or the spout for the bath tub??

PS for those that said to refinish the existing original floors ... as much as we would have loved too, they were actually the original tongue and groove baseboards (albeit "hardwood"), not top-layer old finished hard woods.

The fixtures and wall coverings and flooring are already taken care of - nice tongue and groove, very nice hand-scraped floors, and lighting is covered2.

Kim,Your subfloor may be the plywood used to go over the joists and may be tongue and groove, if this is the case it may be tougher to replace.

Painted or stained tongue and groove?

So I'm doing major rehab of a 5 unit in San Diego and scratching my head on one particular "feature" of the buildings.The ceilings are really nice vaulted open beam ceilings with stained ship lap tongue and groove finish between the bay's - it's visually the nicest part of the units.Turns out the roof is - literally - 1x6 tongue and groove, then 1/2" sheathing, then roofing paper, then shingles.

@Robert Campbell caulk grooves, thinset wall, spray texture, then paint