I hate to be the one to say it, but this is a train reck waiting to happen.

I can see water seeping under the tile via the wood columns, cracks, etc. Then the wood supports will rot and the rest is history. Now this is not that big of an issue if a membrane was put down over the wood decking and everything was flashed and sealed before the tiles were placed.

Then for icing on the cake, I'm betting that those are not exterior floor tiles and they will be as slippery as snail snot when they get damp.

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Scott Patterson
Spring Hill, TN
http://www.traceinspections.com