It appears to be an enameled steel tub. I REALLY don't want to replace it, as it is in good condition, except a wee bit of rust in a couple of spots on the side and flange (won't be visible). BUT, just so I know, what's a lifespan on those things? This one is ~20 years old.
Long side of tub is on an outside wall, so 6 mil poly over the insulation - I am redoing the poly and possibly the insulation, tho things look pretty good back there. Thought I'd just do the 6 mil poly on the side walls as well, which never HAD a vapor barrier before.
Then yes, cement board (I have Hardiebacker only because that's what the local hardware store sold), tape and thinset mortar in seams, and then, ultimately, tile.
What are these window things of which you speak? The holes in the tub flange are tiny, but I suppose I could enlarge them.
I am in the middle of nowhere, far from Vancouver, but we will make trek to Kamloops for the tile so I could get other things I need at that point.
Thanks for the suggestions.
Lelani