All that old cast iron should have been removed and replaced with PVC.
Just look inside that drain and tell me why.
If your still not going to replace it before it starts leaking or pluging up just use some of these.
http://www.bing.com/images/search?q...07410569078F6300E37&qpvt=closet+flange+screws
Whats the plans for the flooring?
Tile can not be installed over 1/4 underlayment.
Was that underlayment attached every 4" on the edges and from 6 to 8" in the field?
All nail heads and seams gone over with filler?
Just look inside that drain and tell me why.
If your still not going to replace it before it starts leaking or pluging up just use some of these.
http://www.bing.com/images/search?q...07410569078F6300E37&qpvt=closet+flange+screws
Whats the plans for the flooring?
Tile can not be installed over 1/4 underlayment.
Was that underlayment attached every 4" on the edges and from 6 to 8" in the field?
All nail heads and seams gone over with filler?