How to tell if your roof has asbestos
Corrugated cement sheet roofing — often called fibro — on a home built before the early 1980s is the main giveaway. It isn't always obvious just by looking, since some later materials have a similar corrugated profile. If you're not sure, the safest move is simply not to drill, cut, or disturb it, and get a professional to confirm rather than guessing.
