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Unread 10-17-2020, 07:07 AM   #3
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Join Date: Jul 2005
Location: Fairfax, Va
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To add to Tonto's post, given the 12X24 large format tile you intend to use, as part of your slab prep you'll also want to use a long straight edge to check for floor flatness. I believe the requirement is that the floor can deviate from the intended plan by no more than 1/16" in 2 feet and by no more than 1/8" in 10 feet.

In other words, if the slab has high spots you'll need to remove them. If it has low spots you'll need to fill them.
If I recall correctly my memory is excellent, but my ability to access it is intermittent.
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