Originally Posted by ford1386
I sealed up some cracking caulk joints on the roof and I went around and caulked everything that sticks through the sides. Once I fix these corners I'm going to do a seal test to be sure. With the rear corners having a radius I'm not sure what trim I should use to cover this gap.
So you are saying the separation was caused by delamination generated by leaks? Is there enough intact "meat" keeping the sides and rear attached to one another???
Do you have a metal fab shop in your neck of the woods? If so, having two pieces of architectural aluminum (6063 also called "sharp") angle formed would be ideal! Depending on the shop, they might use a powered bending machine, shrinker, or do it on a wheel. Something like a 1.5" x 1" unequal leg angle would cover it all. Could even have them drill and countersink regularly spaced holes for you to screw it on, and with a proper priming you can paint it yourself to match. Caulk up the gaps before putting the channel in place, use butyl tape on each leg of the channel, install, and then finish with nice caulk beads on the edges of the angle and it'll look very close to something the factory would do.