Asbestos Roof Solutions News – May 2018
As evidence that fibres do become loose from the surface of asbestos roofs, the accompanying photographs, show fibres, from a weathered asbestos cement roof,
In recently cleaned box gutters, at a job site in April 2018, in Sydney NSW.
Weathered asbestos cement roof sheeting, (Fibro) undergoes a weathering process after many years of exposure and a loose surface layer develops, which on roofs becomes colonised with dark coloured lichen.
The lichen, a type of fungus, secretes oxalic acid, attacks the cement, causing exposure of the asbestos fibre. The surface becomes unstable, the asbestos cement sheeting is weakened and the darkened colour causes a substantial increase in roof cavity temperatures.
The unstable nature of weathered asbestos cement roof surfaces (Fibro) is a cause of some concern in the community, as white and blue asbestos fibres were used in the composition of asbestos cement sheeting. In the 1980’s the use of asbestos was discontinued in the production of Fibro cement sheeting, but the ageing existing roofs continue to deteriorate.
Asbestos Roof Solutions are the number one installer of the Fibroseal system in Australia, which seals and encapsulates the loose fibres, on site, without the need to remove the roof.
Asbestos Roof Solutions have the full and complete backing of the system manufacturer Crommelin, to assess, specify and carry out asbestos encapsulation installations.
