Not sure if I need to use self leveling or non-leveling on this part of the roof seam. I attached a pic. Any input appreciated, thanks! Photo of roof seam
For the Area above the rail, I would use Sikaflex. As others have mentioned, the area MUST BE CLEAN. Sikaflex will not run and gives excellent adhesion to the various components. It is also paintable if you do not like the white contrast after applying. Doug