In message , Bash
writes
Leaving aside the problems with asbestos disposal. What would be the
best material to replace the (properly disposed of) corrugated asbestos
cement roof? Corrugated bitumen sheets seem ok for sheds but they seem
a little flimsy for a garage roof.

Cement fibre?

Same as you have but not asbestos since 1995.

regards

--
Tim Lamb