Glue and the temp

[absolutsnwbrdr]

I think you'll only want to glue the perimeter of the aluminum skin to prevent the canning effect. The differences in thermal expansion of materials are to blame for the warping. Your aluminum should mostly float on the sides.

[aggie79]

I edge glued my aluminum skins. The aluminum sheeting is also "trapped" by the aluminum trim. Oil canning does happen in our high temperatures, but it is not that much. I took the picture below in June when it was about 95 dgrees. You can see the oil-canning by the distortion in the reflection.

Thanks Zach,

Will the sides not want to flop around in the wind while driving though?
With the canning effects, once it buckels does it stay that way?

The oil canning does not flop and when the temperature goes down, the oil canning goes away.

[Lgboro]

I undersized my skins by 1/8" to minimize oil canning. Even on 95 degree days around here I have only minimal oil canning ; certainly not enough to be a concern. The windows, doors and trim will be plenty to hold your trim. Mine has survived 11,000 plus miles at interstate speeds (65 to 80 mph depending on the state) without issues.