"Molding" on a teardrop

This question is for those of you who added molding to the outside of your teardrop (and have an aluminum skin roof). Below are two pictures of what I mean (thanks to Dave and Scott & Sharon for the pics I appropriated temporarily).
It looks like you've installed the aluminum edging after you put on the molding. The molding appears to be about 1/4 inch wide. Did you have to get special edging wide enough to accommodate the extra width with the molding, or does the usual stuff work?
Thanks,
Kelley

It looks like you've installed the aluminum edging after you put on the molding. The molding appears to be about 1/4 inch wide. Did you have to get special edging wide enough to accommodate the extra width with the molding, or does the usual stuff work?
Thanks,
Kelley