If you need to repair a toilet flange because it is too low, save money by doing the work on your own. All you will need to spend in the process is around $30. Once you already have the toilet removed, you can see the flange is too low to place the toilet on.
Step 1: Prepping the Ring
Remove the toilet from the base in the ground to easily access the flange underneath it. Ensure that the water that is going to this toilet is turned off before you begin.
You will want to make sure the toilet flange is clean and clear of any debris. You can clean the ring with mineral spirits to remove any wax that is built up around it.
Place the extender ring over the toilet flange, and remove any flange screws that are there from the last ring. They should be lined up with the extender ring. Apply a pea-sized amount of the silicone caulk around the inside edge of the exterior ring.
Step 2: Installing the Ring
Line the holes of the exterior ring to the holes with the flange. Screw both the ring and the flange into the floor using 1¼-inch (No. 8) stainless steel screws to prevent rusting. Wipe away any excess caulk that is left behind around the ring. You can then reset your toilet back in place. Make sure it is secure so when people use it, it does not slide off of the ring or tip in any one direction.