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During the installation of an asbestos roof encapsulation coating at a Moorebank Sydney facility with asbestos roofs, fitted with metal box gutters, testing picked up the presence of asbestos in the gutters. This is a timely reminder to those conducting asbestos roof repairs, who work near or with materials containing asbestos to take care and follow the correct work procedures to protect your client, but just as importantly your employees. Weathered asbestos roof sheets are in a constant state of degradation, due to the prolonged effects of weathering which breaks down the cement content of the roof sheets exposing the previously bonded asbestos fibres. Figure 1. CHRYSOTILE ASBESTOS AND FIBREGLASS STRANDS FOUND IN THE BOX

Asbestos Roof Solutions – 6th February 2019  Asbestos Roof surfaces -from Bonded to Friable on site, explained.   A recent asbestos roof inspection by Asbestos Roof Solutions, requested by a client who had received his yearly asbestos register update, revealed a major safety issue. The yearly asbestos register audit had been undertaken for the last six years, providing the client with guidance as to how to manage the asbestos on site. This year the 3,600m2 super six profile, asbestos roofs condition report, was upgraded from the asbestos contained within the roof sheets from being in a bonded state to now being in a friable state. In layman’s terms this means that the asbestos fibres that

Recent storm events on the east coast of NSW have highlighted the danger asbestos building materials can pose when they are disturbed. Asbestos Roof Solutions specialises in the encapsulation of asbestos roofs and these recent storm events highlight the danger to the community of asbestos in the environment. Asbestos Roof Solutions know from experience that weathered asbestos roofs pose a danger to the community because they can secrete asbestos fibres into the atmosphere. As an example of the hidden danger, Asbestos Roof Solutions recently assisted at a major manufacturing site in Western Sydney. A recent pea size hail storm at the facility blocked the gutters and downpipes causing rainwater to overflow into the inside of

A recent photograph taken at Asbestos Roof Solutions current site, shows three different roof sheets, adjacent to each other. Sheet 1                                                                                     Sheet 2                                                              Sheet 3 From the left (Sheet1) we can see a super six profile roof skylight sheet made from the latest fibreglass

During the installation of new box gutters at a Sydney facility with asbestos roofs, on site testing detected the presence of asbestos fibres in the gutters. This is a timely reminder to those who work near, or with materials containing asbestos, to take care and follow the correct work procedures, to protect your client, but just as importantly your employees. Weathered asbestos roof sheets are in a constant state of breakdown, due to the presence of lichen, secreting oxolic acid, which breaks down the cement content of the roof sheets, over time exposing the previously bonded asbestos fibres. Currently there are only two ways to stop this breakdown process, one is to remove and replace

Fibro asbestos roofs undergo a breakdown process similar to the rusting of metal roofs.   Asbestos roof sheets were constructed using Portland cement, water, then reinforced with asbestos fibres.   This photograph shows the extent of the breakdown of the surface of aged asbestos roof sheets. Losing the surface cement through weathering, the roof sheets become thinner from the upper surface. They then change to a darker colour and so attract more heat, being of limited flexibility, the roof sheets then expand and contract and eventually crack. You can liken this process to a metal roof undergoing the process of becoming rusty; you can treat the rusted areas, or wait until the roof sheet disintegrates