Just to clarify, I would be screwing through the holes in the ears into concrete slab on the outside of the flange? The flange also needs to be raised 3/4". Am I able to use the flange extender with these repair flanges?
I have no relevant experience.
As I envision it, if you used the a repair ring with ears, what you would do would depend on how much space there is between the top of the spacers and the repair ring.
1. If a gap, you would screw the spacers to the ring with silicone adhesive between the layers. Then the closet bolts would only be thru the repair ring
2. If there is no gap between the spacers and the repair ring, I see the closet bolts going through the whole stack. I still see some adhesive between the layers. Alternatively, I guess I could see caulk or wax between the layers.
If you used the Danco hydroseat, I picture you holding the rings together to the closet flange with bolts. The hydroseat would be above. The wax under the hydroseat would easily fill the gap.
Alternatively, with the hydroseat, I could see no rings, and instead stacking enough wax rings to make the wax squish when you bring the Hydroseat down. The horn on the hydroseat would deflect some pressure from plunging that might blow out a thick wax section otherwise.
If you install a Hydroseat or expansion ring with ears, you will have to drill clearance holes through the tile, and then be careful to center the pilot hole into the concrete below. Drilling ceramic tile is hard, but not that hard. Drilling porcelain tile is very hard -- in both senses.
