I took a sample of some insulation that I was 99% sure was asbestos to a lab(place has good reputation) for testing. Well it came back negative. To be frank, I'm not sure I trust the result. Should I retest at different lab using sample from different place?
Did Johns-Manville make any insulation products that
did not contain asbestos? House was build in 1947. Material appears to be loose balls poured between the ceiling joists, its held in place with paper on vertical surfaces. I'm going to isolate it with plastic regardless. This is up in the attic, and there is no air flow into the home.
What do you say?
