Asbestos is a mineral that was commonly used in building materials before it was banned in the UK in 1999 due to its harmful effects on human health. Asbestos can be found in many materials, including roof tiles, insulation, pipes, and flooring. If left undisturbed, asbestos-containing materials may not present a risk. However, when these materials are damaged or disturbed, asbestos fibers can be released into the air and inhaled, which can cause serious health problems.