Hmm, well, its actually not that dangerous, as its particles not fibres,
bout the kind of dimpling it has on its surface seem not to be able to be
removed and if you do it seems that its still powdery underneath. I guess
some modern paints might be better though.
Brian

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The Sofa of Brian Gaff...

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On 13/01/2019 19:25, Tricky Dicky wrote:
Depends a bit on the aesthetics, patched in cement/asbestos roofs tend to
look crap. If that is not an issue then a lot depends on how long you
want the repair to last because inevitably you will end up repairing it
again. Those roofs tend to weather over time the eventual surface does
not provide the best substrate to adhere on and being the material it is
not really feasible to clean it.

Richard


I plan to wire brush it (wearing mask and working up-wind) around the
damaged areas, then to seal it with either a PU varnish or proprietary
primer.