Quick question regarding tiling and a SLIGHTLY unlevel floor
If you've got a few small high spots you should grind them down. Otherwise as you said you have to raise the rest of the floor. But, if your stressing that it's only "slight", then if slight to you is about 1/16" in 12", you should be OK.
What size tiles and how wide a grout joint are you planning? Is it regular tiles with slightly curved edges or rectified?
Tile 4 You LLC Troy, MI
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