OK, so I just finished repointing my brick chimney, all new copper flashing.
Previously it just had beveled mortar on the top of the chimney, with the flu sticking up a few inches. I wanted to add a cap.
So I laid up 5 half bricks on each corner to get about 9-10" of clearance between top of flu and bottom of cap (will be bluestone).
What I'm wondering is, I've never really laid brick before. These 5 bricks in the corner look like I could blow on them and they'd fall down. But maybe after the mortar cures they'll be OK? I see this design all over town, I'm just not very confident in it and I don't want bricks and a huge piece of bluestone tumbling down my roof, which is steep and high with streets on two sides of the house.
So, assuming I mixed the mortar properly and laid the bricks properly, is this going to stay put?
Should the stone be mortared to the brick, construction adhesive, or what?