"Edwin Pawlowski" wrote in message
...

wrote in message
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On Wed, 12 Jul 2006 20:12:52 -0700, "Eigenvector"
wrote:

In my house I have a run of PEX tubing that runs right past, almost
touching
in fact, the gas vent for the hot water heater. My concern is that the
PEX
is in danger or melting or accelerated decay due to the heat.


If this was my house I'd spend $20 or so to get that PEX away from
that exhaust vent. Why risk your home and life for $20. ANYTHING
flammabe should NOT be near an exhaust pipe from a gas heater. PEX is
some type of plastic. Plastic burns/melts.

In spite of all the concern, it is really? If the gas vent is a PVC vent,
it would not be ea problem as there is so little heat. We really need
better information.
I left out some information because I wanted some general impressions more
than anything. Yes it's a 3" galvanized exhaust pipe leading to the roof
for the water heater, the PEX as it stands is already about 2 inches away
from the pipe, but as it is a temporary fix it is relatively unsecured so it
may flop around a little bit as the PEX expands (which by the way is a
disturbingly large amount). It will never come within 1 inch of the exhaust
pipe however much it expands.

I agree with the Souperman dude, it should be rerouted and it will when the
rest of the pipe section is replaced.