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  • Slab leak repair

    Kudos to American Leak Detection for putting me right on top of this under slab leak.
    Was able to effect repair through 5-inch hole cored into floor.
    Pin hole leak on bottom of 1/2" copper can be seen reflected in mirror.Click image for larger version

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  • #2
    Re: Slab leak repair

    That is awesome,was it hydronic heating or plumbing? Did you solder it or shark bite it? Propress?

    Comment


    • #3
      Re: Slab leak repair

      It is a cold water supply to kitchen ran in the same ditch as the 2" waste line.
      Soldered couplings were used in repair.

      Comment


      • #4
        Re: Slab leak repair

        Traditional solder or silver solder?


        David

        Comment


        • #5
          Re: Slab leak repair

          That is really accurate. Nice work.

          Comment


          • #6
            Re: Slab leak repair

            Originally posted by Dhal22 View Post
            Traditional solder or silver solder?
            Regular ol' 95/5.
            Does this mean I'm gonna get spanked?

            Comment


            • #7
              Re: Slab leak repair

              Originally posted by Big Jim View Post
              Regular ol' 95/5.
              Does this mean I'm gonna get spanked?
              Yes Even a dumb Carpenter I know ,uses silver solder under ground. chances are they're more pin holes to come on this home !
              I can build anything You want , if you draw a picture of it , on the back of a big enough check .

              Comment


              • #8
                Re: Slab leak repair

                Tool, while that is true based on our code, in all honesty a soldered joint doesn't know the difference between being underground outside the house or underground inside the house.

                Code might say no soft soldered joints within the structure underslab. But a properly soldered joint will not leak or pull apart no matter where it's located.

                Propress and sharkbite are approved for underground installations. But not underslab within a structure either.

                The bigger issue is what caused the pinhole and is it isolated or just the start of what's to come. Could have been contact with something in the soil. Residual flux that never washed out. That's why the water soluble flux has been required since the mid 90s.

                A 5" sample might not be enough to see whats going on with the pipe, but I doubt anything will happen to his properly soldered joint.

                Rick.
                phoebe it is

                Comment


                • #9
                  Re: Slab leak repair

                  Thanks for your support.

                  Comment


                  • #10
                    Re: Slab leak repair

                    No spanking. I agree with Rick's summary.

                    Originally posted by Big Jim View Post
                    Regular ol' 95/5.
                    Does this mean I'm gonna get spanked?

                    Comment


                    • #11
                      Re: Slab leak repair

                      Pinholes could cause by many variables. PH of the soil, pH and Chlorine residual of the water in the service and last but not least a hot service. Another scenario is if the service is in proximity to buried electric. That is more common on the street side of the service and not the home owner side, what happens is stray current from electrostatic transmission cables finds it way to the service and blows it apart. I work for the water district and we had an issue when we first started chlorinating, pinhole services leaks were popping up at the rate of 3-5 a day.

                      Comment


                      • #12
                        Re: Slab leak repair

                        Originally posted by BlazinSS934 View Post
                        Pinholes could cause by many variables. PH of the soil, pH and Chlorine residual of the water in the service and last but not least a hot service. Another scenario is if the service is in proximity to buried electric. That is more common on the street side of the service and not the home owner side, what happens is stray current from electrostatic transmission cables finds it way to the service and blows it apart. I work for the water district and we had an issue when we first started chlorinating, pinhole services leaks were popping up at the rate of 3-5 a day.
                        Welcome aboard Blazin. You bring a lot to this table, Tool
                        I can build anything You want , if you draw a picture of it , on the back of a big enough check .

                        Comment


                        • #13
                          Re: Slab leak repair

                          Rick, another interesting piece of information. We have had absolutely NO prohibition on use of Viega and similar. What I find even more interesting is that American Leak was right on the money. God damn if we get within 6mtrs down here we are made to feel grateful. Yeah I know that it is not an exact science as such but......................!!!!!!!!
                          Is 95/5 similar to what we call 50/50 or 60/40 solder??????????????/

                          Comment


                          • #14
                            Re: Slab leak repair

                            The leak detectors I use guarantee location within one foot or they relocate for free.
                            Solder is 95% tin and 5% antimony.

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                            • #15
                              Re: Slab leak repair

                              How bout "cavitation" as a result of not reaming the original copper pipe?

                              Dave Doyle

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