mjr6550 Posted January 26, 2015 Report Share Posted January 26, 2015 I saw these stains at several areas in an attic. They are not from condensation. No apparent odor to them and I was not in the mood to taste them. I'm thinking it is asphalt or something leaching out of the moisture barrier on the insulation. I think I have seen this in the past, but not often. Any thoughts? Click to Enlarge 30.1 KB Click to Enlarge 36.69 KB Quote Link to comment Share on other sites More sharing options...
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