If there's any chance it's asbestos
Don't drill, cut, sand, water-blast, paint or walk on it until it's been assessed. Disturbing asbestos cement releases fibres, and removal is a job for a licensed removalist.
What to do next
If the checker says it could be asbestos, the next step is a test by a licensed assessor or a laboratory. Our guide is my roof asbestos? explains what to look for and the rules in your state, and asbestos roof replacement explains what replacing it involves.
Want a roofer to take a look?
Tell us the job and your postcode. We match it with a Find My Roofer certified roofer who specialises in that kind of work, and they call you to quote. Your number goes to them alone.