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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?

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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 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 at 1:58
  • Ok get that so you get level start,and down low wont see it. – user101687 Jun 17 at 2:08

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