Asbestos is a hazardous substance that was commonly used in buildings and construction materials up until the 1980s. It is a naturally occurring mineral composed of thin fibers that can result in lung cancer, mesothelioma, and asbestosis when inhaled. Asbestos was used in a variety of building materials such as flooring, roofing, insulation, and fireproofing. If you have an older home or building, it is imperative that you get it tested for asbestos to ensure the safety of all occupants.