The roof go the house was something that took a long time to get right. I made a small mock up to experiment. This a few folds the over lap and its very easy to crush and ruin the panel. I had to use packers to prevent this and allow the flashing to link the roof panels. The flashing is then crimped together as the other panels. The panels come together to for a T join and a slider channel. Between each join there is a angle screwed to the roof then there are six M3 blots joining the panels together and the channel that is crimped over the joint.
I cut out each panel and punch the holes to line up when they when on the roof then i made the flashings to fit after and the gutting out of the same metal.