I did my roof the way you showed and the rain ran down the side of the chimney and underneath the shingles. You have to put something on the chimney that goes over the ones you showed. Cost $6000 to repair. Please give contact information. My lawyer has to talk with your lawyer.
That first piece is an apron flashing 😂 that’s not counter at all… you didn’t cut a riglet in the brick… you have to cut the brick a 1/2 inch or more then install a counter in that groove that comes down over the piece you installed… you can’t caulk the top of that piece it will leak in 5 years…
Crazy the table on the lower side of the chimney that you caulk to your flashing is going to trap water someone will definitely be repairing this in the future
Would you use quarter-size dabs of adhesive instead of a continuous bead or would you leave the flashing on top of the shingles completely to allow water that flows down the chimney wall onto the flashing to drain onto the shingles unimpeded? It seems that putting shingles on top of that bottom flashing would allow for a horizontal movement of water underneath the shingle to go onto the deck at both ends.
All I do is flashing and custom sheet metal items dormers. standing seam roofs. Etc. It's ALL WRONG sorry man I love my job and your lesson was a slap in the face