Last year I remodeled my second bathroom. After I put new floor I found that toilet flange and floor tiles were on the same level. I went to Home Depot and per HD employee recommendation purchased and installed a small plastic toilet flange extension ring.
Currently, I am remodeling my master bathroom and ran into same problem. I went to HD and purchased an extension ring.
My question is:
Do I need somehow seal junction between old flange and plastic extension?