While removing/cleaning the bathroom fan hood, I noticed that the edges of the hole in the drywall ceiling have a very fibrous-looking layer/sheet on each side of the gypsum.
This house is very old (going on over 100 years) and I'm not sure when this bathroom's ceiling was last renovated.
I will take a sample to the lab tomorrow, but wondering if anyone has seen the sheeting look so fibrous like this?
Best Answer
If that drywall job is more than 30 years old, it could have asbestos in it, but you wouldn't be able to see it - the fibers are too small.
Those fibers are probably fiberglass - added for strength.
Testing either way, causes no harm.