Roxul, Inc.
Mineral wool from volcanic rock and recycled steel slag. Available in batt and board forms. Natural insect resistant. Does not degrade in UV light.

ThermaFiber LLC.
Mineral wool insulation boards and batts with up to 90% recycled content. Non-combustible - resists temperatures up to 2000 degrees F. Non-corrosive and will not absorb moisture. Does not settle, rot, decay or break down. Our products attenuate sound, conserve energy, reduce Green House Gas emissions, and improve the indoor air quality of a building. Thermafiber products contribute to 20 LEED credits across 4 different categories.

USG Interiors
Mineral wool blown-in. Made from metallurgical slag and basalt. At least 50% post industrial recycled slag. No chemical additives. Naturally fire resistant. USG assists tornado and disaster areas to help rebuild communities.