I live in AZ and have a clay tile roof with a chimney. I had persistent leaks in the area of the chimney due to a poor install that came with the home and I recently had the chimney re-flashed to correct the problem. Previously I had channel flashing on the sides (though not j-pan) with appropriate metal counter-flashing. There wasn’t sufficient overlap between the two, along with numerous other issues which required the repair. The new job has proper j-pan channel flashing, but the roofers appear to not have installed metal counter-flashing on the chimney. It almost appears to be some kind of membrane/tape that they used to join the top of the channel flashing to the sides of the chimney? From what I’ve read, this is not a proper job, but I wanted to get the opinion of some experts before I ask the roofer to correct. Here is a picture of the current install.