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Looking for some tips on how best to install. Read a few different things but nothing that seems to fit this scenario.
Few pictures at what I am looking at are attached. Not sure weather to go over the lip with the concrete backer board or fill the gap somehow as I need something to hold the tile. Thanks for your help![![enter image description here][1]][1]
It looks like you have drywall attached to the studs above where the tub is attached.
You should remove the drywall entirely. Then put concrete board or something like densglass or kerdiboard and bring it butted to the tub.
Then your wall sheet and the tub ledge should be nearly flush. Finally, install the tile covering both the wallboard and the tub lip.
With such small tiles, you will want to bond those completely to a backer board. So, your options would be as follows:
Shim out the studs so that you can install a backer board down to an 1/8 inch above the tub rim. They make drywall shims that are commonly available at hardware stores for this purpose.
You might be able to use a foam backer board, such as Wedi, Kerdi, or others, and "route out" the foam backing around the bottom of the board so that it will slide over the tub flange and sit 1/8 inch above the tub.
