Mineral wool loose fill insulation is made from molten rock and slag and spun or blown into fibers that are then processed into the final product. It is an effective insulation and meets the requirements of ASTM C764 – Mineral Fiber Loose Fill Thermal Insulation. Mineral wool loose fill insulation is inorganic and noncombustible. In addition, the fibers will not rot or absorb moisture and do not support the growth of mildew, mold, or fungus.
Exfoliated vermiculite that is used in more than 80 years for fire protection, friction linings, horticulture, agriculture and building& construction has a great demand, in which it also used widely as Absorbent, Acoustic insulation, plasters, packaging materials, loose-fill insulation, seed germination and much more.
This image shows the ceiling near an exterior wall, and the result of wind blowing through the soffit vents and moving the loose-fill insulation off the drywall. Known as wind-washing, this phenomenon can be curtailed with the use of baffles fastened to the rafters at the truss heels.