Types of Asbestos Insulation

Asbestos-containing thermal insulation can be grouped into four major categories: Loose-fill, lagging, block and spray-on, these are the most dangerous asbestos products.

Loose fill Asbestos Insulation

Loose-fill insulation is designed to be poured onto attic floors or blown into hollow spaces inside walls and other building structures. Fluffy loose-fill asbestos insulation — sometimes made almost entirely of the toxic mineral — is extremely dangerous because even a slight air current can disturb it, sending inhalable asbestos fibres into the air.

Asbestos Thermal Insulation (Lagging)

Insulation coverings (lagging) for heating pipes, ducts and other plumbing components in old buildings often contain asbestos.

Asbestos Block Insulation

One simple way to insulate the wall of a building is to glue a slab of insulation to it. In the past, these insulation blocks were often made of nearly pure asbestos, which creates a major exposure hazard whenever such blocks are sawed or damaged.

Sprayed Asbestos Insulation

Spray-on insulation was developed to reduce the amount of labour required to apply insulation and fireproofing materials to ceilings, walls and structural beams. You can see spray-on insulation in many large commercial buildings where the ceiling is coated with a thick layer of grey material.