Asbestos Roof

Hi Kuade
In Vic a roofing plumber has to do any repairs associated with roofing and in NSW a builder can do it (we are licensed in both) so depending on Qld regulations I am not sure who you would contact but a building inspector could refer you.
Asbestos roofing isn’t always easy to walk on depending on how old it is, so be careful. Depending on the profile you will probably not be able to replace a sheet if you put your boots through a sheet, and may need to replace a whole section or worse (the whole roof). In Vic asbestos has to be handled by a Class A or B contractor for unfriable asbestos over 16 mt sq. In NSW a licenced contractor is only needed for over 200 sq mt. So you will have to find out what Qld laws are regarding asbestos if you need to remove/replace it as they all differ.
It may just be that a couple of sheets need rescrewing/nailing or some flashing or gutter needs attention so I would recommend getting a roofing contractor to have a look at it. If the area directly above the water damage has an a/c or chimney or anything else that is flashed around it you could nearly bet that it has perished or needs a bit of tlc. Hopefully a Queenslander may be able to reply with state specific advice, otherwise speak to a building inspector as mentioned above.