A so called professional tiler has put the same large shiny tiles on my mother in laws bathroom floor as he has put on her wall.  The grout has completely cracked/chipped away from the floor ones and the tiles are wobbling/loose.  I presume they are only wall tiles as they are shiny and understand that floor tiles should not be for safety reasons (it doesnt look safe at all).  i also know that floor tiles are thicker than wall tiles so am 99% sure they are definitely wall tiles.  Should she just get all tiles on floor removed and proper floor tiles put down or could she get away with it if the whole lot was refixed/regrouted with proper floor tile mixture.    thank you.