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Frank[_13_] Frank[_13_] is offline
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Default Green Sludge In Plumbing?

On 5/9/2010 12:14 PM, DerbyDad03 wrote:
I was doing a little plumbing yesterday and came across something I
hadn't seen before.

I cut a 1/2 copper pipe about a half inch from a sweated copper
coupling. Inside the pipe was small amount of green sludge, almost
like a drip, about 3/4" long. The sludge was soft and easily removed
from the pipe.

Was this nothing more than some flux that had seeped onto the joint
and reacted with the copper?

Its copper oxide, i.e. corroded copper.