If the ACM is maintained and undisturbed, there is no exposure or risk to building occupants. Exposure can occur when the ACM is abraded or disturbed during maintenance, construction, remodeling, abuse, or some other activity. When feasible, ACM is labeled with an asbestos warning label. If the material is not labeled or posted, and you are not sure if the material contains asbestos, do not disturb it. The mere presence of asbestos does not necessarily present a health hazard.
Asbestos is a common name for a group of naturally occurring mineral fibers.
Due to its strength, durability and insulating qualities, asbestos has been incorporated into a wide variety of construction products. Asbestos-containing materials in buildings pose no risk to health unless asbestos fibers become airborne and are inhaled. Intact, sealed and undisturbed materials are not a hazard. Asbestos is a hazard only when small fibers become airborne, are inhaled and deposited within the lungs. Increased incidence of several illnesses including asbestosis, a debilitating lung disease, lung cancer and mesothelioma, a cancer of the lung cavity lining, have been observed in asbestos industry workers who were exposed to high levels of airborne asbestos over extended periods of time.