Asbestos gallery: Asbestos sprayed insulation


Asbestos Sprayed Coatings


Thermal and anti-condensation insulation on the underside of roofs –and sometimes the sides of industrial buildings and warehouses. Acoustic insulation in theatres, halls, etc. Fire protection on steel and reinforced concrete beams/columns, and on the underside of floors. Overspray of target areas is common.

Asbestos content and type / date last used:

Asbestos sprayed coatings were usually 55%-85% asbestos with a Portland cement binder. Crocidolite (Blue) asbestos was the major type used until 1962. A mixture of types (including crocidolite) were used until mid-1971. Asbestos spray applications were used until 1974.

Ease of fibre release and product names:

The surface hardness, texture, and ease of fibre release will vary significantly depending on a number of factors. Asbestos sprays have a high potential for fibre release if unsealed – particularly if knocked, or if the surface is abraded or delaminates from the underlying surface. Released dust may then accumulate on false ceilings, wiring and ventilation systems. Asbestos sprayed coatings are commonly known as ‘Limpet’.

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