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Unread 06-12-2022, 05:04 PM   #2
Kman's Avatar
Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 12,340
Lou, that's why a lot of installers elect to make their own inside corners. It's easy enough to do with a 4" square piece of Kerdi band. Cut from the middle of one side to the middle of the square, and overlap the two pieces.

So there will be a small hole at the center, which probably wouldn't let any water through if you overlap the pieces enough. But just to be safe, I'd put a dab of silicone in that corner.

But I don't know of any reason that you couldn't bury the wall board in the mud floor, as long as the manufacturer of the board condones it.

The top ten reasons to procrastinate:

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