Hello, I am tiling my bathroom floor and when I removed the toilet I found the current flange in pretty bad shape and am not sure what route to go to replace it. All the cast iron replacement flanges I looked at with the tightening gasket need to be bolted to the subfloor, however, if you look in the photo you can see that there is a hole in the concrete subfloor roughly the same diameter as the flange so I wouldn't be able to do that. My dad looked at it and went and got a pvc flange that inserts into the pipe and said all I had to do was fill the hole up with concrete and bolt it down. Correct me if I'm wrong but I didn't think you could just stick a pvc flange into a cast iron pipe. So is the lead/oakum route my only option or is there something else I could do?
Thanks!
Thanks!