Asbestos is a natural mineral fiber. The fibres are fireproof, light and can be far thinner than a human hair, often being invisible to the human eye. 
Asbestos was widely used for building materials to protect critical parts of the building from fire.

Asbestos was sprayed onto timber frames or used in the construction of ceilings and walls.

Asbestos fibres are Toxic and produce cancer several decades after exposure.

It is now forbidden to use Asbestos for new buildings.

Instead other less harmful materials are used in the construction of new buildings.

Yes, it does. Even though we stopped using Asbestos in new buildings, it still exists in old ones.

Large amounts of Asbestos fibres are released into the air when old buildings are demolished or renovated.

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