fairly common and fairly easy to sort, you could get it tested first for sure but it will almost certainly be asbestos adept a lower risk probably around 5% concrete asbestos, whats the age of the building cira 1950? build? Then check with your local council and see if they will take the sheets, hose down the whole of the roof while you are working wearing a full over suit and a P3 mask, you can never have to much water it will stop the fibers from becoming air born and small spray bottle as you work would also be a good idea. Take each panel down and double wrap them in strong plastic making sure you tape each layer of the plastic, try to as much as you can avoid breaking any of the panel as this will cause more fiber release. When all this is done take of the suit and double bag and wrap that as well, then go and have a shower and drive to the local recycling center if they will take it, for example where I live they are happy to take it during 1pm and 3pm. Some guy the other end has to get all the kit on just to open the door of the skip it goes into and he isn't allowed to even touch your double wrapped bags you have to place them into the container.
