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re: Water leak question

Posted on 8/7/26 at 9:50 pm to
Posted by Clames
Member since Oct 2010
20133 posts
Posted on 8/7/26 at 9:50 pm to
quote:

All that is true but you can’t say PEX will outlast copper all else being equal.



It certainly can, especially in cases were it's buried or can be subject to freezing. PEX doesn't care about corrosive conditions, can shrug off a freeze cycle that bursts copper, etc. They both have pros and cons like any other system. Same for Pro-Press systems.
This post was edited on 8/7/26 at 9:59 pm
Posted by Clames
Member since Oct 2010
20133 posts
Posted on 8/7/26 at 9:58 pm to
quote:

I had a leaking pipe in the slab years ago.


Dealt with that for a friend while helping him remodel a kitchen. No wetness or hissing but I noticed this one small section of the slab was unusually warm, used my thermal camera to see a clear outline as well as the heat trace of the old copper line that used to feed a laundry nook that had been converted into additional storage cabinets years ago, long before the current owner. Yay for owning a demolition saw with a 14" diamond blade...
Posted by Spankum
The Sip
Member since Jan 2007
63614 posts
Posted on 8/11/26 at 8:17 pm to
Well, the leak detection company came today and verified that there is no leak on any of the potable water system by doing a pressure drop test. This is quite a relief to hear, that there is no leak in the slab.

The bad news is, I still don’t know what is leaking. He did agree with my theory that air conditioner condensate is what is leaking.

I have a second plumber coming tomorrow morning to check it out. This plumber supposedly has all kinds of bore scopes, etc. and will check out the air conditioner condensate line and the sewer pipe that it is supposed to be dumping into. My hopes are that we find a plugged up sewer vent that the condensate line is dumping into that is overflowing.
Posted by UptownJoeBrown
Baton Rouge
Member since Jul 2024
12804 posts
Posted on 8/11/26 at 9:03 pm to
Keep us posted. Very interested to see what the issue is.

What about a sewer line crack? Is there a bathroom close by?
This post was edited on 8/11/26 at 9:05 pm
Posted by Spankum
The Sip
Member since Jan 2007
63614 posts
Posted on 8/12/26 at 11:05 am to
Found the problem! There was a sewer vent pulled apart at a fitting. There air conditioner condensate dumps into the vent above the point of the break.

I am so happy to find this problem, I haven’t yet processed why the three other companies didn’t find this.


I will post pictures when I figure out how to do so.
Posted by ItzMe1972
Member since Dec 2013
12969 posts
Posted on 8/12/26 at 11:09 am to
I haven’t yet processed why the three other companies didn’t find this
--
Glad you got it resolved. Plumber find it?

Was it in plain view or covered with insulation?
Posted by UptownJoeBrown
Baton Rouge
Member since Jul 2024
12804 posts
Posted on 8/12/26 at 1:24 pm to
quote:

Found the problem! There was a sewer vent pulled apart at a fitting. There air conditioner condensate dumps into the vent above the point of the break.


Ahhhhh. Thanks for the update.

Boy that sure is something that you don’t see a lot of. Usually the only issue with sewer vents is they get plugged with a bird nest or something like that.
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