[A930Rocket]

I’ve been building on the coast of South Carolina for 25 years, but have not used copper. Of course, everybody uses PVC piping for the waste lines. I’ve never seen brown goo on any PVC and never heard of spraying pipes.

If the rest of the copper looks good, maybe get an estimate when the plumber takes a look, to replace the copper. If the copper is sweating, and you replace it, maybe insulate it.

Edit. I see the brown goo on the Romex also. Strange.