After reading a few articles online and asking a few people, as well as reading the instruction that came with my tub (Sterling made), it said that the cementboard should be installed in FRONT of the tub flange and leave about 1/4" gap. Well, I took this route and you can see my part way through below:
After reading a few post on here, everyone seems to say that if you are going to do this, you should put up furring strips so the backerboard doesn't bow. The flange on this tub ia bout 1/8" thick and there is some slight bowing because of this. I really didn't think much of it at the time. Other people say to just sit the board on TOP of the flange and fill the base in with some form of thin/thickset.
Well I have no the right side wall and the entire backwall up, over the flange, with a slight bow. I have 1 more wall left to do, which is the left side.
How critical is it that I either cut out the base of the boards (essentially making the board rest on top of the flange). I'm really not looking forward to having to take the piece down to be honest, so I'd just grab my dremel and do it on the wall.
Could a decent tile person just deal with it as? I plan to use a standard 4" square tile. This is a guest bath with little use. It will get used for actual bathing, and only used as a shower a handful of time a year. Is my only concert tile fitment, or is there other concerns?