Fiberglass insulation is made from molten sand with recycled glass and other inorganic materials under highly controlled conditions.
Fiberglass is non-combustible and will not support the growth of mildew, mold or bacteria when tested in accordance with the specifications of the American Society for Testing and Materials (ASTM C665).
Fiberglass may cause itchiness and temporary skin irritation in many people handling the products. Fiberglass insulation is one of the most thoroughly tested building materials in use today. Nearly 60 years of extensive research and comprehensive reviews by independent research organizations have concluded that there is no convincing evidence that exposure to fiber glass is associated with respiratory disease or cancer in people. Other insulation materials do not enjoy the same long history of testing as fiberglass insulation.