


Not ACM, right?
We have been finding random orange/yellow fibers on the floor of our 1950's rental home for years. Almost looks like a felt material. Our rental company came out and looked in the attic maybe 2 years ago but couldn't figure out where it was coming from. I don't really think they did much trying, either. I am thinking it's insulation or lining for duct work. Stopped happening for awhile now it's happening again.
We will probably be calling HVAC on our own because our landlord probably isn't going to want to pay to have this checked out.
I think it's coming out of the vents, even though I've never actually caught it falling out. Possibly coming through baseboards but not sure how likely that is.