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Green on new copper

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  • Green on new copper

    Hello all.

    2 months ago I put in new copper pipe for the house water. The cold lines now have a green substance around the joints. Anyone know what this is?



    "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools" - Douglas Adams

  • #2
    Re: Green on new copper

    Yea,

    You didn't clean your joints after soldering. It's copper deteriorating.
    the dog

    Comment


    • #3
      Re: Green on new copper

      no big deal,might be a good idea to clean off what you can.i use medium to fine steel wool and w-d 40.also,after soldering a joint,I spray with the same and wipe clean.

      Comment


      • #4
        Re: Green on new copper

        The flux residue and humidity is causing the copper to oxide, or sulfide and or sulfate or a combination of all three, if it was steel it would be considered rust or rust like,

        the sites below may be helpfull to you.
        http://www.newton.dep.anl.gov/askasc.../chem00456.htm

        http://www.copper.org/applications/a.../finishes.html

        http://www.copper.org/resources/prop...ion/green.html

        http://www.copper.org/applications/a...ring_chart.pdf
        Push sticks/blocks Save Fingers
        ~~~~~~~~~~~~~~~~~~~
        "The true measure of a man is how he treats someone who can do him absolutely no good."
        attributed to Samuel Johnson
        ~~~~~~~~~~~~~~~~~~~
        PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

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        • #5
          Re: Green on new copper

          Thank you.

          I'll start scrubbing tonight.
          "A common mistake that people make when trying to design something completely foolproof is to underestimate the ingenuity of complete fools" - Douglas Adams

          Comment


          • #6
            Re: Green on new copper

            Thats one reason I dont use or like Copper
            http://www.all-clear-sewer.com/

            Comment


            • #7
              Re: Green on new copper

              Many plumbers will wipe the joint as the last step in the soldering process, with a damp cloth it cleans the joint and removes drips and globs of solder making a very professional looking joint, and usly will remove the flux residue thus nearly eliminating the Green glob.

              the trick is not to do it to soon that the internal solder is still in the molten stage or more than likely you will end up with a leaking joint,

              ~~~~~~~~~~~~~~~~~~~~~
              "The last step is to wipe the joint. With an old, old rag (which you're going to throw away and never use again), perhaps moistened slightly, folded to several thicknesses to protect your hand from this very hot pipe, quickly wipe the excess solder and flux away. Your goal is a bright, clean, shiny joint, with clean copper on both sides and a little band of silver-gray right at the joint, with no big blobs of solder or streaks of flux. You might imagine you can skip this step, because an unwiped joint doesn't look too bad at first, either, but a few weeks later, the residual flux will have corroded the exterior of the pipe and left ugly green streaks. (Also the greasy flux residue will be impossible to paint, if it matters.) So do take the extra few seconds to wipe the joint clean.

              If you're using a wet rag, it may cool the joint too quickly, leaving a pebbly or blobby texture to the exposed solder. If this happens, just play your torch briefly over the joint again to remelt and smooth the solder. (And yes, the appearance does matter"

              http://everything2.com/index.pl?node...&lastnode_id=0
              ~~~~~~~~~~~~~~~~~
              or
              http://www.aaasolar.com/ProdLit/Mini...r%20Tubing.pdf

              ~~~~~~~~~~~~~~~~~~~~~~
              If you ever solder with a soldering Iron keep a damp rag near to wipe the tip of the gun or iron on to keep a clean well tinned tip ready to work,
              Push sticks/blocks Save Fingers
              ~~~~~~~~~~~~~~~~~~~
              "The true measure of a man is how he treats someone who can do him absolutely no good."
              attributed to Samuel Johnson
              ~~~~~~~~~~~~~~~~~~~
              PUBLIC NOTICE: Due to recent budget cuts, the rising cost of electricity, gas, and oil...plus the current state of the economy............the light at the end of the tunnel, has been turned off.

              Comment


              • #8
                Re: Green on new copper

                Originally posted by All Clear Sewer View Post
                Thats one reason I dont use or like Copper
                Or you can use copper with ProPress...

                Comment


                • #9
                  Re: Green on new copper

                  Originally posted by All Clear Sewer View Post
                  Thats one reason I dont use or like Copper
                  I cannot think of any material which has had a better service life overall than correctly installed copper.

                  Mark
                  "Somewhere a Village is Missing Twelve Idiots!" - Casey Anthony

                  I never lost a cent on the jobs I didn't get!

                  Comment


                  • #10
                    Re: Green on new copper

                    see it looks nice if you clean your copper


                    Last edited by HVAC HAWK; 04-15-2007, 03:13 PM.
                    Charlie

                    My seek the peek fundraiser page
                    http://observatory.mountwashington.o...nal&fr_id=1040


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                    new work pictures 12/09
                    http://public.fotki.com/hvachawk/

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                    • #11
                      Re: Green on new copper

                      In Australia we don't have this problem with copper as we do not use flux

                      Comment


                      • #12
                        Re: Green on new copper

                        Originally posted by china View Post
                        In Australia we don't have this problem with copper as we do not use flux




                        why is that??? what do you do? silfalse maybe?(brasing with brass)
                        9/11/01, never forget.

                        Comment


                        • #13
                          Re: Green on new copper

                          China, the prettiest plumbing I ever saw was in a boiler plant in Woomera. Every fitting in the building was polished to a high shine. You could tell those guys (er .. blokes?) really took pride in their work and their facility.

                          Go
                          Practicing at practical wood working

                          Comment


                          • #14
                            Re: Green on new copper

                            In Australia we use silver solder 2% for copper to copper no need to use flux , copper to brass you need flux

                            Comment


                            • #15
                              Re: Green on new copper

                              Originally posted by ToUtahNow View Post
                              I cannot think of any material which has had a better service life overall than correctly installed copper.

                              Mark
                              True. Copper has history behind it. Time will tell (in a 100 years or so) whether plastic holds up as well. It will probably be fine but the water heater tube incident leaves some cause for concern.

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