Hello, I have removed and reinstalled an old tile floor, along with mortar base, etc. Now, my flange is about 3/4 higher than the tile floor is when finished. It is secured , just too high. What are my options? Can I shim under the toilet then seal around it with caulk to hide the gap? Or are there any more options? The flange looks to be made of copper, and has a solder joint near the street angle. Could I unsweat the joint, then cut a way a part of the straight pipe, re-solder then be in business. Or if I unsweat, will there be problems. Or- could I unsweat and then twist in one of these PVC flanges with the neoprene rubber gasket sealer that fits inside the street angle. Thanks in advance. I am stumped in this one at this stage.

 

Is this bathroom over a basement or crawlspace?
If it is, you can cut the pipe under the floor below the flange to lower the flange to be flush on top of the new finished floor level with only the thickness of the flange above it. Bolt the flange to the floor. Use a masonry bit to drill thorugh the tile.
You can use a no-hub (aka mission) coupling to connect the pipe without having to do any soldering.
Good Luck!
Mike