Sounds like you have " blown in shredded type " insulation, not all insulation is fiberglass. Usually blown-in is made from recycled cellulose material and looks like old newspaper wadded-up, wet and shredded so if you cut a whole in ceiling it will fall out, nothing to hold it in like backing on batted fiberglass insulation.. Lowe's sells shredded type and rents the machine to blow it in. Some attics you can't get a person in their, sounds like what happened in your case, guy had to cut through ceiling to get at whatever he was working on.
02:32PM | 11/09/15
Is fiberglass insulation dust noticeable if it is what does it look like