Double fiberglass vs. mineral wool
having a hard time making a choice on cavity insulation for my 2×6 walls.
I really want to go with Mineral Wool due to the increase in r-value, quality of the product, and ease of getting a class 1 install but at about twice the price of fiberglass I am having a hard time justifying it. (1.01/sqft vs .46/Swift)
For twice the price, wouldn’t it make more sense just double up the fiberglass in the cavity? It seems to me by doubling up, even with compression, you would be gaining more than R-3 and could gain the other benifits of a more dense cavity insulation?
am I crazy for thinking this is a better bang for my buck that filling the cavity with mineral wool batts?
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