5. Take the hammer drill and drill through the mortar line and into the concrete slab. Next, come back and insert a metal support rod to tie the brick to the concrete.6. Insert the metal rod through the hole until it stops. Mark the rod and cut it about an inch shorter so the end is not visible when the rod is installed (figure D). Cut the rod using a hacksaw. Repeat the process if necessary to install more rods.
7. Mix up mortar and make a stiff batter, about the consistency of oatmeal. Add a bit of concrete fortifier to the mix to add flexibility.
8. Coat the support rod with mortar and insert into the hole (figure E). Use the back of a trowel to force the rod into the hole, and fill the hole with mortar so the rod disappears (figure F).
9. Next pack the gap along the base with as much mortar as possible. Load up a scrap 2x4 with mortar and use it as a platform as you force mortar as deep into the joint as possible using the trowel (figure G). Clean excess mortar from the bricks and tool out the joints so they're nice and smooth. Finish by running a bead of concrete caulk along the top seam.
10. Leave the shims in place at least a day until the mortar sets up. This keeps the weight of the bricks from forcing out the mortar. After a day or so remove the shims and pack some mortar in the holes, and remove the hydraulic jack and temporary support post.