Finally got a chance to work on my counterflashing for the chimney. The temporary caulking job I did for step flashing did a good job, but wanted to permanently complete the flashing job with angle grinder, copper, metal brake, and mortar. Unfortunately came to a realization that masons are human too by installing bricks in an imperfect position. Thus, no matter how much I bend copper to create a tight squeeze, there is always a small gap between each flashing piece due to variably positioned bricks. The very last one especially. See below.
Not terrible by any means, but ruins the curb appeal. I was thinking about using clear caulk or silicone with temporary weights while it dries to eliminate gapping. I will caulk only on the sides, of course, no caulking on the bottom since water needs a way to escape. Is that a reasonable thing to do or will it lead to something unexpected? I really like to dab a small amount of silver solder between each step, but I fear I may burn the house down or make a mess with the solder. Most European installations make cap flashing steps as one piece of lead or copper, so I doubt using either silicone or solder would make any issues. So long as cap flashing and step flashing remain unattached to each other and free to move. But my worry with silicone is that the part under it will remain shiny while the rest of copper will patina. That will leave quite visible lines which I am trying to eliminate in current situation with visible gaps. If I left it as is, I worry any high wind will be more likely to bend it away and it looks unsightly. Any thoughts on the standard of practice?