 are that many times that attic space is not cleaned up. What I mean by cleaned up is they haven't sealed up everything. You've got can lights that are leaking, all the holes for the electrical and plumbing, any vent fans that aren't sealed around, all those things need to be sealed any place around there. So what I recommend is if you're putting one of those in, pull the insulation back, go in, and then caulk and seal up everything between that attic space and the living space down below it.