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HSL investigation refutes asbestos claims over safe cement

The Health and Safety Laboratory (HSL) have investigated claims that chrysotile in asbestos cement changes into a non-asbestos fibrous material called Casitile. The claims also suggested that this process is 100% efficient and no chrysotile asbestos remains in the matrix and no release of airborne chrysotile fibres can occur.

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HSL investigation refutes asbestos claims over safe cement

The Health and Safety Laboratory (HSL) have investigated claims that chrysotile in asbestos cement changes into a non-asbestos fibrous material called Casitile. The claims also suggested that this process is 100% efficient and no chrysotile asbestos remains in the matrix and no release of airborne chrysotile fibres can occur.

The HSL investigation refuted these claims and confirmed that chrysotile fibres are in-fact present in the cement matrix, often as quite large fibre bundles which are clearly visible to the eye and that when asbestos cement is disturbed, chrysotile fibres are released from the cement into the air.

A copy of the HSL report can be found below.

Investigation of the chrysotile fibres in an asbestos cement sample (HSL/2007/11)

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