Mineral Wool vs. Cellulose Insulation
I am building a house in CZ6. I have an r 70 roof system and walls with 4” of recycled polyiso sheets. The sheets are 2” thick with staggered seams that are foamed. We installed Enerlux triple glazed windows. The house is wrapped with Resisto Red Zone, a self adhered membrane.
The house is framed 2 x 6, 24” o.c. and I have not decided what type of insulation to use. I carefully blew in cellulose into the parallel roof trusses, but I was told the free rental machine cannot dense pack. The highly recommended cellulose professional in my area stated that the 24” o.c. stud bays are a PIA too fill as they install they apply netting after they blow in the walls. Therefore, I’m considering mineral wall. The only Rockwool that is available in my area is 16” and for 4” stud bays and I initially had hesitated to use mineral wool because of wiring, plumbing..,
My only experience with mineral wool was doing a basement ceiling where we used it for sound proofing. On that job that supplier ran out of Rockwool and we had to switch to another brand. I remember feeling that the other brand was inferior in that it didn’t hold together as well. This was about four years ago.
So I’m looking for advice on cellulose vs. rockwool and possibly going with high density fiberglass. Thank you in advance.
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