It's simple, the watertight seal between the toilet bowl and wax ring will eventually fail.
View How To Install A Toilet Flange On Tile
Images. Set your toilet flange into position on top of the tile with the back holes lined up parallel to the wall behind and the two slots parallel to the two walls on each side of the toilet. The installation process is the same for a tile floor, a hardwood or carpeted bathroom floor.
Press the rubber gasket onto the new closet flange; Place the wax ring on the closet flange, not on the toilet. Here's a video on how to install a toilet flange on tile floor:
This is the last step of the process for installing ceramic tiles around the toilet flange.
A toilet drain flange can sit above or below the finished floor level. This is the last step of the process for installing ceramic tiles around the toilet flange. Next, install a new wax ring. The toilet must not be sealed with a conventional wax ring, so.