Leak at Awning Rail
I'm chasing a couple of leaks that I believe are coming from the curb side awning. I've attached a picture of the rail and have a couple of questions. For some reason the picture is rotated 90 degrees - My thumb is pushing down on the roof.
1) As shown in the picture, when I press down on the roof at a point between the rivets, the skin depresses and separates from the rail. The old caulk is obviously not doing much good here but with this much give will a new bead of caulk do any good or is there something more that I should be doing? Note that the rivets securing the rail to the roof are about 9" to 10" apart.
2) Should I remove and reinstall the rail? If I do, should I place some Butyl or VHB tape under the rail?
Note that I plan to cover the edge of the rail with Eternabond tape so I'm basically trying to figure out what I should do before installing the tape.
Also, I don't really want to replace the rail but more then anything I want to stop the leaks, so my goal is to do it right and not have to deal with it for years.