Rectified porcelain install needs fix

[RenoPhobic]

We had 1,000 sq feet of 18x18 rectified porcelain installed. There are several spots where the installer screwed up and the edges are slightly lifted, just enough to be visible and sharp to bare feet. It's a real shame. He is looking into polishing the floor, but I am hesitant. The design looks like marble, but doesn't go all the way through. I can see hitting the edges by hand with some kind of hand held grinder with very mild wet paper, but brining in a giant floor polisher seems like a further disaster. This isn't marble after all. Anyone every polish porcelain? Any suggestions?

 

[White Room]

Grinding and even an attempt at polishing porcelain sounds a big no no....

 

[Dave]

Through bodied porcelain can be ground and re polished but you can't with a print finish , it will just remove the print finish off the surface.

 

[Alphadock]

As davidhowetiling says, a through/full body porcelain can be polished. I would be very impressed if someone to obtain a good finish in this situation though. The problem being the whole floor would need grinding back, if you just did a few spots (and managed to polish the surface to match the original) you would be left with a 'dish' on the surface which would show up.

Have you got a couple of spare tiles left over?
Try putting them face to face and see if they sit flat together.
Some tiles are bowed which makes it impossible to install them perfectly flat with no lippage.
Some tilers just aren't very good, I'm afraid to say.

I certainly wouldn't recommend polishing them.