When does asbestos become hazardous?

Asbestos becomes hazardous when it is in a friable state, meaning it can easily break down and become airborne. This airborne asbestos can be inhaled, leading to serious health issues such as lung cancer, mesothelioma, and asbestosis. When asbestos is intact and in solid form, it typically poses a lower risk, as the fibers are contained and not easily released into the air. Painting over or sealing asbestos can also help minimize exposure, as it prevents the fibers from becoming airborne. Submerging asbestos in water does not make it hazardous, as the water further contains any potential fibers from being released into the air. Therefore, the risk primarily lies in the friability of the material.