On 3 Mar, 16:36, Bruce wrote:

Instead, use a ladder or staging to get into a position where you can
remove the moss with a pressure washer. *Otherwise, don't bother.

One of the worst things you can do with an asbestos roof is to
pressure wash it. Now that really does loosen the fibres up!

Personally I leave mine and its moss well alone. I fix it where it
needs it, otherwise we live in blissful mutual ignoring of each other.