Asbestos is a naturally occurring mineral that was widely used in building construction during the 20th century due to its fire resistance, durability, and insulating properties. However, it was discovered that asbestos fibers can cause serious health problems when inhaled, including lung cancer, mesothelioma, and asbestosis.

That is why the use of asbestos in new building materials has been banned in the UK since 1999. Nevertheless, many older buildings still contain ACMs, such as corrugated roofing sheets, pipe lagging, ceiling tiles, and insulation boards. If these materials are damaged or disturbed, they can release asbestos fibers into the air, which can be inhaled by anyone in the vicinity.