I've only heard of one other guy getting his roof replaced. I think his instance was from the dealer installing the roof rails and the glass cracked.
I'm not sure I would have been brave enough to ever put anything on the glass itself, especially me! You said you have been on the glass several times or the expidition rack? I'm sure the rack can support you, but not the glass.
Rob
Hi Rob,
Do you have any more information about this? I left the dealership with some short rails installed and noticed a crack originating from the roof glass exactly where the screw to attach the rails is (like they tightened it too much). I'm hoping when I take the vehicle in this week that they will agree with me and replace it on their dime. Any information is appreciated!