What did you do with the old asbestos sheet roof? Just put the new roof on top? ( I've been advised this can be the best way to deal with the stuff)
That certainly is a recommended method as if it's not disturbed it's safe to leave it as long as it's encased properly, but I wanted vaulted ceilings and beams inside (see pics below) and with the existing asbestos roof being held up by steels I decided to remove it. It was disposed of by putting each sheet in a double asbestos disposal bag and having an asbestos disposal company collect it and issue the certificate for building control so they know it's been disposed of properly.
Original roof:
New roof: