u/Malavial

Ripped out existing tile that was fully mortared in with lathe. It was very thick.

New hardiebacker+plywood leaves a significant gap between what will be the tile and the flange.

What is the best thing to do here? I'm thinking I just have to cut the flange off then cut the pipe level with the tile and insert a new flange into the cast iron pipe with it sitting on top of the tile?

My ez trap flexible tubing has a crack/leak in it. This is my hvac drain line.

What do I replace it with? Just normal pvc or should I replace with a similar flexible/clear material?