The wall starter is simply bolted to the existing wall and wall ties are slotted into the rack every time it is required to tie into the new wall.
How to tie a roof into a brick wall.
You have to do it thoroughly so that the rafters sit flush on it.
A structural engineer would need to sign off on that considering you want to tie a roof into that.
After that to make it flush with the roof of the existing house cut the two outer rafters.
You have to ensure that the system is bolted to the wall in a plumb upright position to ensure any brickwork is also straight and level.
It also eliminates the problem of achieving adequate mortar bond at the toothed connection.
Make a cutting on one of the sides of the horizontal roof beam on an angle.
Good luck with properly anchoring into that wall there is no ties in that wall and it looks like the brick are solid no holes for mortar to lock into that wall needs to be rebuilt it s in bad shape and it needs tuckpointing as well.
The roof flashing is then placed up behind this through the wall z bar flashing on the outside of the vertical blocking backing material.
Attach the horizontal beam by using a nail gun.
The other method is to use stainless steel screw in ties.
The exterior wall covering material is then kept off the surface of the roof.