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Unread 12-03-2019, 08:14 PM   #7
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Join Date: May 2017
Location: Milwaukee WI area
Posts: 1,028
did you test and measure both the preslope and final slope for proper slope and consistency?? Is the drain set too high in the mortar bed?

Your issue is NOT water getting "under" the tile through some crack in grout. Water soaks through the grout AND tile.
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