So I've decided to just replace the Flange. This is mainly because there is thinset mortar that is chalky around the subfloor where the current flange is
I think I don't think it will be that hard to do since the flange is an outside flange and the one I will put in will be an inside.
1. One issue is that there is that white mortar which is a bit flakey. Should I chisel it out until it seems hard, then just replace it with more thinset mortar? Or should I replace it with quickcrete or some sort of bondo cement? This is the main thing I'm concerned about.
Also if I use bondo cement repair would this be sufficient for a base for the new flange to be installed
2. Second issue is should I use a plastic ABS flange or an ABS flange with a metal ring? I hear that benefits of metal is its stronger at first, but with water it can corrode very quickly where the plastic doesn't corrode? i was thinking this http://www.homedepot.com/h_d1/N-5yc1...1#.UFrC8Y1lTDE
3. Third, should I put the flange on top of the finished floor or flush with the finished floor. I suppose I'll be using that mortar/cement so I could fill the level to the level of my mortar and then fill it up to the finished floor line like in this pic:
THANKS SO MUCH GUYS!