I keep saying that I’m going to redo the crown of my chimney soon, but I’ll definitely be doing that before this coming burning season. I just went up to take a look at the condition of the machine overall and to see if I needed to put any silicone in any areas around the current crown. I noticed this crack in the mortar joint in between the bricks and was curious if this is something that can be handled by repointing the area or if there is something more that would need to get done. What’s in the picture was the only area I saw this condition. The rest of the chimney joints look like the better part of what is pictured.