Rock Wool Insulation with 80% Recycled Slag Contentby Thermafiber

  • Source: BUILDING PRODUCTS Magazine
  • Publication date: 2007-04-09
Thermafiber

Thermafiber. This rock wool insulation contains 80 percent recycled slag, a by-product of steel production. Slag and other rocks are melted at 2,600 degrees F to fiberize the material. The manufacturer says starting from rock makes the product inherently fire resistant and more dense than fiberglass insulation, resulting in a higher R-value per inch. 888-834-2371. www.thermafiber.com.