Installing toilet without flange
The plastic toilet flange has broken leaving the remnants of tail inside the 4" pvc pipe without any real access below the floor and start from scratch. In a thread by Speedball 1 in 2005, he suggested ways to tackle this monster including doing away with the flange all together and just using a wax ring with a funnel as the toilet flange is used only to secure the toilet to the floor.
Since this is in my sister in-law's house and I am a DIY’er with only some experience in this arena, I want to be sure I understand completely before I go forth. Can I mount a flange spacer ring directly on the floor to secure the toilet bolts, insert a wax ring with funnel and install the toilet? With the tail piece of the original flange still in place, the remaining ID is approximately 3 1/2". Is there another flange that would fit?
Should I insert a second wax ring on top of the first to ensure a good seal? Any leakage or other issues to worry about? Any other ideas?
Appreciate any advice!