I've got a 1927 front-Gable Brick bungalow. This is the variety where the exterior walls are face brick, 12" thick, and features plaster right over brick on the inside walls.
I'm adding elbow brackets made of 4x4 fir beams to support trellis awnings.
Here's one that I built and mounted back at the start of October.
These brackets are about 30" long. I mounted each using two 6' long 1/2" threaded rods with an expanding collars and a liquid mortar to secure the bolts a couple inches into the exterior mortar. They are not coming out easily, but they are not as solid as I would like.
Because of the the way I built and notched the "rafter" boards and the upper mounting plate, the whole thing is pretty solid. The stress force on the rods is mostly perpendicular.
However, I'm not very happy with the way it's secured. I worry that it wouldn't be that hard to rip off the house if someone climbed on it.
This is the rear of the house, and I plan to build a matching awning for the front, and something similar for my dining room window. I'd like to get the mounting right before I go any further.
The options I can see include:
1) drilling into the face brick and mounting the expanding base threaded rod to the brick. I worry that the large diameter of the rod would break the bricks.
2) using 14-16" threaded rod *through* the exterior wall and secured with a nut and a mounting plate on the interior. This would require me chipping out plaster on the inside and putting several holes completely through the house. However, this is how the porches and the wooden framing is secured to the brick shell of the house.
3) something I haven't though of...
Thanks for any suggestions.