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    TrackyT's Avatar
    TrackyT Posts: 2, Reputation: 1
    New Member
    		  
    #1

    Sep 29, 2012, 06:56 AM
    Blue corrosion on outside of copper vent pipe
    I blue corrosion on the outside of the bathroom vent - copper pipe. What is it caused by and should I worry? I have to close up the wall shortly and does this need to be replaced? The house is built in 1960.
    Tracy
    speedball1's Avatar
    speedball1 Posts: 29,301, Reputation: 1939
    Eternal Plumber
    		  
    #2

    Sep 29, 2012, 07:01 AM
    What you see isn't corrosion, It's flux left over from soldering. If it bothers you take a damp cloth and just wipe it off. Not to worry. Good luck, Tom
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