My basement bathroom has a concrete floor substrate, on which I will be installing and also have a baseboard of stone tile. Some of the wall meeting the floor will be tile (currently cementboard)

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and some regular drywall but even the drywall will have tile baseboard.

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Should I tape and thinset the corner where the wall currently meets the concrete substrate and should I do it for both the drywall as well as the cementboard, because of the tile baseboard?


Nope. Don't tape the floor to the wall anywhere.

Install the floor first and then install the wall tile.

  • Is that to keep water from going into drywall air cap? – user101687 Jun 17 '19 at 1:30
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    @RobertMoody it looks nicer to have the transition to be a grout line on the bottom of the wall where you can't see it and any mistakes are hidden, rather than a grout line on the floor that's impossible to make look even and it's easier to see if it's done wrong. – Dotes Jun 17 '19 at 1:58
  • Ok get that so you get level start,and down low wont see it. – user101687 Jun 17 '19 at 2:08

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