Be aware, though, that you may have to special-order mineral wool batts. We used Roxul r value insulation batts. Mineral wool withstands extreme heat better than other types of insulation.

R-value is the degree of thermal resistance of the material; a higher R-value signifies a better insulator. Insulating materials made from fiberglass, mineral wool, and plastic foam are used in the ...

Mineral wool batts are about 25 percent more expensive than fiberglass, however, with an R-value of 4.0 per inch. Did you ever think those old jeans could someday become insulation for someone’s ...