Re: Leak from Hot Water Copper Pipe
Posted by phil on June 29, 19100 at 02:11:51:
In response to Re: Leak from Hot Water Copper Pipe
: : Last evening, I noticed certain parts of my wood parquet floor had heaved in a hallway and in my dining room adjacent to a kitchen wall. Upon closer inspection, I found hot water seeping out of a section of my kitchen wall. Shutting off the main hot water supply stopped the water flow. After attending to soaking out some of the water, I proceeded to open up the lower 3 ft of waterlogged gysum board by hand. Thereafter, I found 2 copper risers, both with several connection joints at about 2 ft. off the floor. Both of these pipes come out of the concrete slab in a vinyl soft sheath. The sheath containing the hot water pipe was full of water. I expected to see water flying out of the elbow and/or connection joints after I turned the hot water back on. Surprisingly, nothing happened other than a couple of bubbles coming from within the sheath. The hot water has been back on for twelve hours since and no water has seeped out of the pipe or sheath at all. I am at a loss as to what may have caused the initial leak as I have done nothing at this location other than wiggling the joints a little to see if anything was loose. Can you please give me some ideas as to what may have caused the leak? Sorry about the length of this question. Thanks.

: The soft vinyl sheath is simply a protection for the copper pipe as it passes through the concrete floor. The copper pipe gets there from the water heater. The liklihood is very strong that the leak is at a 90 degree fitting in the dirt below the concrete slab. There is a very close tolerance between the copper pipe and the fitting, and you very likely wiggled the riser in the fitting and stopped a majority of the leak. But it didn't go away, as evidenced by the bubbling. The hot water is leaking under the concrete and is displacing air under the slab, and that is what you see bubbling. The concrete will need to be broken away in a large enough area to allow the dirt to be dug out to get to the copper piping to fix the leak. At the hot water heater, is there an area that is LOWER than the floor level? The line will need to be cut there to drain water out, so that the repair can be made at the wall, then drywall and parquet floor needs replacement. Do you want to tackle this yourself? Ask your Homeowners Insurance Agent to look at it and recommend a LICENSED plumber and repair crew to do the work, and you'll only pay the deductible

Thank you for your advice.

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