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TrackyT
Sep 29, 2012, 06:56 AM
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
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