On Aug 17, 6:36*pm, Uno wrote:
I just was cleaning my water heater and see the exhaust pipe on it has
come loose in the middle. *Can I just duct tape it for now and not
expect it to melt?
--
Uno

I have used aluminum foil duct tape for YEARS to "fix" the adjustable
elbows and secure joints on flue pipes with no ill effect.
I don't know if it's "ok' but it has worked fine for me w/o problems.

Do not use the fabric or plastic duct tapes for this application.

cheers
Bob