Hello. Yes, it can be used on the shower floor. The mosaics are on a mesh backing which bends nicely for the pitch on the shower floor. Feel free to let us know if you have any questions. Thank you!

Are the edges sharp? We want to us something like this too on our shower floor but our contractor warned us this can be uncomfortable to stand on once the grout shrinks down if the edges are sharp...

The edges are not sharp. One of the most common uses is on a shower and bathroom floor. Hope this helps! Please let us know if you have any questions.

As for putting it on a shower floor...does this need to be cleaned with special cleaners? or will it be fine once it's sealed?

This tile is fine once it’s sealed. You do not need any special cleaners.