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
Prepare the floor for grout. Photo 13: Install an extension ring over the toilet flange. Remove the old screws from the toilet flange and apply a heavy bead of silicone caulk. Photo 14: Install the transition strip. Glue the transition into place with construction adhesive. Photo 15: Stuff backer rod along the wall.