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Unread 02-23-2021, 12:26 PM   #10
MAPEI - Technical Service
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Join Date: Jul 2013
Location: North Texas
Posts: 1,021
Cliff,

It may be a good idea to give Schluter a call just to make sure you are abiding by all their terms to keep the warranty intact. Unless they have recently changed course, our Porcelain Tile Mortar (modified) should be suitable below the Ditra, and Uncoupling Membrane Mortar (unmodified) should be suitable above the Ditra to install tile.
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