Applying Aluminum Sheathing

I've only been able to source 4x10 foot aluminum panels (5x10 would have made things easier)
So, given this, I'll need to cut the panels to be 48" X 60" (trailer width being 60 inches) and overlap one piece over another. I plan on leaving a 2 to 4 inch overlap.
So my first question is, does that amount of overlap seem to be sufficient?
My 2nd question is there needs to be some sort of fasteners running across the seam where the 2 sheets overlap. Any suggestion on what fastener might be good?
Not quite at the point yet of applying the aluminum.....but preparing to order the aluminum sheet and trying to plan ahead.
Thank you.
John
So, given this, I'll need to cut the panels to be 48" X 60" (trailer width being 60 inches) and overlap one piece over another. I plan on leaving a 2 to 4 inch overlap.
So my first question is, does that amount of overlap seem to be sufficient?
My 2nd question is there needs to be some sort of fasteners running across the seam where the 2 sheets overlap. Any suggestion on what fastener might be good?
Not quite at the point yet of applying the aluminum.....but preparing to order the aluminum sheet and trying to plan ahead.
Thank you.
John