Asbestos

Asbestos is an insulating material commonly used from the 1950s to 1970s for soundproofing and to cover floors, ceilings, water pipes, and heating ducts. When this material becomes crumbly or frayed, asbestos fibers can be released into the air. Breathing asbestos fibers may cause lung cancer, asbestosis (scarring of the lung tissue), or mesothelioma.