What type of insulation can be problematic if disturbed?

Asbestos insulation is considered particularly problematic if disturbed due to the health risks associated with asbestos fibers. When asbestos-containing materials are intact and undisturbed, they generally pose little risk. However, when they are damaged or disturbed, tiny fibers can be released into the air. Inhalation of these fibers can lead to serious health issues, including lung cancer, mesothelioma, and asbestosis. This is why special precautions and regulations are in place regarding the handling and removal of asbestos insulation.

In contrast, fiberglass insulation and foam board insulation do not carry these same health risks when disturbed, though fiberglass can cause skin irritation and respiratory discomfort if mishandled. Cellulose insulation, while made from recycled paper products, does not pose the same level of danger as asbestos; it may settle over time but does not release harmful fibers if disturbed. Thus, the clear distinction of asbestos as a hazardous material underscores why it is the correct choice in this context.