Asbestos is a mineral that was commonly used in construction materials in the 20th century due to its heat resistance and durability. However, over time, it was discovered that asbestos is highly hazardous to human health when inhaled in its fiber-like form. Asbestos fibers can cause a range of respiratory diseases and even cancer, which is why it became illegal to use asbestos in new construction projects in the UK.

However, many older properties built before the 1990s may still contain asbestos. It's essential to identify and remove it to protect your health and that of those around you.