As long as you have a solid floor that can bear the weight, your tile is laid correctly (no air pockets and a solid bond between tile, subfloor and floor) you should be find. If there is nothing to compress or flex should be fine.

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- With out god, life is everything.
- God is an ever receding pocket of scientific ignorance that's getting smaller and smaller as time moves on..." Neil DeGrasse Tyson
- You can pray for me, I'll think for you.
- When you understand why you dismiss all the other possible gods, you will understand why I dismiss yours.