In college me and my rommies did a grow in the attic, We had some old Type of insulation up there. It was foamy, greenish grey and sorta looked like paper mulch. We took some of it in a bag to HomeDepot and were told it wasn't abestose. We moved as much as we could of the dusty shit over to one end of the house. No MASKS JUST T shirts, that wasn't vry fun Sealed that end really well .. 2 tarps/ and then covered floors and walls of the grow area with Black and white plastic wrap, So not too much of it drifted into the grow area. and any part of grow area was covered with plastic.

We then cut up a Ping Pong tabble into 6 strips of wood. and made a make-shift floor (ontop of the plastic). our grow worked out fairly well. the unknown insulation didn't seem to cause any problem,s that we haden't faced before with growing in the basment of the same house.

Kd