When you install your toilet flange it should be installed on top of the finished floor and it should also be installed perfectly level.
Toilet flange half inch above floor.
This is very important.
Toilet flange 1 2 proud of floor if are an issue raise the area just under the bowl match the footprint of the bowl cut a piece of wood stone would be better paint it white to match the bowl set bowl on top of buildup.
You can remove your old flooring and lay your new flooring down.
It has to sit evenly on top of the finished floor.
Since this dimension is intended to work with a standard wax ring there s little chance a 3 4 protrusion will work.
Optimum flange height to aim for is 1 4 inch above the finished floor.
The critical feature is how much higher the under toilet ceiling is than the bottom perimeter base that sits on the finished floor.
Btw 1 4 below finished floor is not perfect for the flange.
When preparing to install the toilet the first thing to confirm is the proper flange height.
Purchase a new one if the previous flange is too low purchase one that is designed to sit on the finished floor and provide the optimum toilet flange height.
Should remedy your problem easily.
Once you have an exact measurement go to your local flooring or home improvement store and purchase tile with the thickness that you need.
To do this you ll want to first measure how much higher the toilet flange is currently sitting above your bathroom floor.
If not a toilet spacer can be added.
If your flange sits even or below the floor then it s wrong.
The bottom of the flange should sit on top of the finished floor.
The optimum toilet flange height is approximately inch above the floor to achieve the best seal and overall fit.