Step 2 · Dry Fit the Flange Extender
Before applying any sealant, perform a dry fit. Place the toilet flange extender ring directly on top of the clean, existing flange. Check to see that it sits perfectly flat on the flange and the surrounding floor without rocking. Verify that the slots for the closet bolts on the extender align correctly with the slots on the original flange. This ensures that when you set the toilet, the bolts will pass through both the extender and the original flange correctly.