Asbestos refers to a group of six naturally occurring fibrous minerals that were commonly used in a variety of building materials and products due to their insulating properties and durability. However, prolonged exposure to asbestos fibers can be toxic to human health, leading to respiratory illnesses and cancers such as mesothelioma.

The use of asbestos in building materials was banned in the UK in 1999, but many properties constructed prior to this date may still contain asbestos. It is important to test for asbestos in any materials that are suspected to contain it, particularly prior to any renovations or demolitions that may disturb the material and release harmful fibers into the air.