Personally I would suspect that the roofing is a cement based product which contains some asbestos, which is unlikely to be the "blue" asbestos, croccidolite. It would surprise me if it were friable, i.e. likely to crumble into a fibrous nature. Asbestos used as lagging in boiler rooms or around pipes normally would be blue asbestos, and that definitely should be removed by a specialist Licensed Contractor. It is the fibres that cause the problems. I would suggest that you can remove it yourself, BUT do not smash into pieces, it is essential to remove it in panels, carefully unscrewing the fixing screws, or removing the nails that attach it to the beams. If you want to take a few more precautions, wear a disposable cover-all and a disposable mask, minimum FFP2, FFP3 would be better. All available from the major DIY outlets.
Afterwards remove the cover-all first, do not pat yourself down to get any dust off the cover-all. Fold both mask and cover-all up and double bag as McMouse suggests. A further precaution would be to really dampen the roof panels before starting to remove them.
Assuming the panels are in good condition, you could use a sealant on them, both sides. Then no need to remove them.