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Originally Posted by JTW37
Also found this:
Mineral Wool is spun from mineral mining waste into felts, blankets and batts. Post-industrial recycled content averages 75% in keeping with the Environmental Protection Agency’s (EPA) guidelines. Its rating is commonly R19 to R26 and costs about 50¢ per sq.ft.
I don't think the price per foot is current. 2"x 24"x 48" at McMaster-Carr runs $10.67 for non-backed. Pretty rigid stuff. I'm using it in my 3x3x6 footer as well. Going to test it today..  |
Yeah, .50/sq.ft. is a good current price (I actually got it a little cheaper locally). McMaster-Carr is just high...