Asbestos is a type of naturally occurring mineral that was commonly used in construction materials in the UK until the 1990s. It was praised for its heat-resistant properties and durability, making it a popular choice for insulation, roofing, and flooring. However, research has found that asbestos can cause serious health problems, including lung cancer, mesothelioma, and asbestosis, among others.

Asbestos fibres are too small to be seen with the naked eye, making it impossible to know if a building contains this hazardous substance without proper testing. Once asbestos materials are damaged, such as during renovation or demolition, they can release fibres into the air, which can be inhaled and cause serious health problems.