Grout on tiles. (which shouldn't be there)

[aidy_is]

So, decided to make one last push to finish the bathroom which has already taken me literally a month of sundays.

I can't bear tiling and so decided to get a "professional" in. The mosaics in the shower he's done ok, but the floor is a different matter. He has managed to leave a thin (in some places, thick in others) layer of grout over a considerable area of the tiles.

This is not shifting using water, a scourer and a bit of elbow grease, and i am scared of ruining the surface of the tiles (which are polished limestone). Does anyone have any suggestions? Can i use some sort of polishing machine/drill attachment without ruining the tiles?

any advice would be greatly appreciated,

aidan.

 

[Thermo]

Easiest tip, get the professional back to sort it out. If you havnt paid him yet, make it quite clear you will hold some money back until its sorted

 

[Jasonb]

Did he seal the tiles before grouting? You can get grout removers that are safe for limestone & marble, but always do a test first on a spare tile. As thermo says get the guy back, if he is a pro he should know what to do, don't pay him until its OK.

Best to ask Mudster over on screwfix forum (when its working) as he specializes in fixing & importing limestone.

Jason