/diy/ - Do It Yourself

Anonymous Thu Jan 3 06:01:59 2019 No.1528999 [View]
File: 223 KB, 1219x914, IMG_20181222_131211.jpg [View same] [iqdb] [saucenao] [google]

>>1528772
It is flammable, but also R7.5 (at least the 1 or 1.5") and harder to work with.
We actually used that in the joists of the house I worked at as well, along with any joists that weren't thick enough.
So, there were 9" pockets next to the joists. We used (1.5"?) foam board, then foamed, then rockwool-ed the cavity, giving it an R-22.5 rating. One more round of Rockwool and it'd be more than what's in the attic. The only pic I have is of before we started.

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/diy/ - Do It Yourself

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