NO PROBLEM JUST SET YOUR FLOOR AND LEAVE ENOUGH ROOM ARROUND THE CLOSET RING AND AFTER YOU ARE DO WITH THE TILE JOB YOU CAN BUY A CLOSE RING EXTENSIONS.. IT IS MAKE BY PASCO AND IT WILL COME WITH RINGS THAT GO OVER YOUR EXISTING RING AND YOUR CAN USE THEM TO BRING THE CLOSET RING UP TO THE PROPER LEVEL. IT WILL ALSO COME WITH LONG CLOSET BOLTS TO INSTALL YOUR TOILET.. YOU CAN ALSO USE TWO WAX RINGS AND LONG BOLTS, BUT NOT AS GOOD OF A SEAL..GOOD LUCK YOUR FRIEND THE PIPEXPERT….