Asbestos is a group of naturally occurring fibrous minerals that have high tensile strength, flexibility, and resistance to heat and chemicals. It was widely used in the construction industry from the 1950s until 1999. Asbestos can be found in insulation, roofing shingles, floor tiles, cement, and other building materials. When these materials are damaged or disturbed, they release dust and fibers that can cause serious health problems, such as cancer and lung disease.