asbestos shingles broken in my house
Based on the looks of our shingles outside we were told they were asbestos. We were told as long as they are not being sanded or drilled they are fine to be removed even if a few break because the asbestos fibers were baked into the shingle and are unlikely to be airborne.
I was OK with this since it was outdoors but now we are in the process of an addition and shingles were removed in the mostly-enclosed area of the addition and my contractor was deliberately breaking them to dispose of them in a bag! I'm worried about fibers being airborne "in" my house since this was within the already walled area that is soon to be finished and part of my house.
I'm looking into testing but does anyone know if this is something I should be worried about? I know breaking them is supposedly not a real issue but what if he was breaking a bunch of them?
and if it did cause asbestos to be airborne, how long till it settles? (at which point it will be covered by carpet tiles etc would it then not be a problem?)
I know there are guidelines for removing it and all, but I"m looking for actual knowledge on whether or not this poses a hazard. Thank you.