I have two upstairs toilets (back to back in separate bathrooms) that have been backing up every two weeks for a few months now. The plumbers and rooters can't seem to figure out what the problem is.
Initially, the thought was that using flushable wipes was the problem. The rooter cleared the clog, tv'd the line, and found nothing (no root problem, no debris hanging on somewhere in the line - nothing). Problem solved, right?
Well, two weeks later, the toilets clogged again. No continued use of the wipes. Again, drain cleared, tv'd, and nothing found evidencing the basis for the clog.
Wouldn't you know it - two weeks later, the toilets clog, AGAIN. This time a new rooter comes out, clears the clog, and can't figure out what the problem was.
The main floor toilet only clogged during one of these episodes. Today, the two upstairs toilets clogged again.
For background, one of the back to back toilets was off its base for a few weeks due to a remodel. A new toilet has since been installed there, and it is still backing up.
The last couple of clogs, the toilet seems to be working fine, then suddenly, after one flush, it's plugged. There doesn't seems to be any warning.
Any ideas on why the toilets would continually clog, despite being cleared out every two weeks? Much thanks!!