Weepy copper joint

Discussion in 'Remodel Forum & Blog' started by stevencar9, Feb 21, 2010.

  1. stevencar9

    stevencar9 New Member

    Messages:
    2
    While soldering a new T into an existing copper pipe, I inadvertently heated a nearby joint to the point the solder was bubbling. now the joint weeps a little water. How little? When I rub my finger in gypsum dust and then rub the joint, it comes back damp. It doesn't drip, nor even run down the pipe, although some copper oxide is beginning to accumulate. I've kept the wall open for a couple months, hoping that calcification and oxidation would stop the weep, no luck. There are a number of other Ts nearby, and I'm afraid that attempting to reheat the joint will only make things worse. Should I: 1-Attempt to resolder? 2-Clean the joint and wrap it in epoxy? 3-Close the wall and hope it never becomes an issue? 4-Attempt some other fix which you will advise me of presently?
  2. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    You only have one option and you know which one it is.
  3. jadnashua

    jadnashua Retired Defense Industry Engineer xxx

    Messages:
    22,313
    Location:
    New England
    You can wrap a wet cloth around the nearby joints to keep them from getting hot enough to do that. You need to pull apart that leaking one, clean it off, flux, then resolder it. Sometimes, it easier to just replace the joint.
  4. stevencar9

    stevencar9 New Member

    Messages:
    2
    New England and Canada, therefore you are living in those magic kingdoms where the pipe is solid and most of the plumbing is above ground. Now, imagine you are in California and the repairs you are proposing are to copper tubing four inches above where it disappears under the slab and are very likely going to entail moving a wall and jack hammering the slab.
  5. SteveW

    SteveW DIY Senior Member

    Messages:
    1,053
    Location:
    Omaha, NE
    Are you sure it's not condensation, but actually leaking from the joint?

    If so, as is posted above already, you really have to take it off and redo the joint.

    Not sure of your concern about the pipe going into the slab or why you'd have to jackhammer concrete or move a wall - post a picture if you want some feedback about that.
  6. dlarrivee

    dlarrivee New Member

    Messages:
    1,172
    Location:
    Canada
    It's always a lot more work to do things the right way, isn't it?
Similar Threads: Weepy copper
Forum Title Date
Remodel Forum & Blog Zinc or Copper flashing to prevent roof algae Jul 24, 2010
Remodel Forum & Blog Replace copper lines with PEX? Jun 10, 2010
Remodel Forum & Blog Copper Naphthenate - How long before you paint? Sep 14, 2009
Remodel Forum & Blog Pros and Cons of copper sinks Sep 12, 2008
Remodel Forum & Blog Epoxy lining of H20 copper pipes?? Jun 6, 2008

Share This Page