See attached photos. Garage is 1955 build. We’re removing the ceiling joists and installing rafter ties above to “vault” the ceiling. I’m concerned that there isn’t enough rafter bearing on the top plate, because they didn’t cut a birdsmouth to attach the rafters to the top plate.
To address this, I’m going to sister the existing 2×4 walls with 2×6, then add a ripped 2×4 on end to the side of the top and bottom plates. This will essentially turn this into a 2×6 wall, thereby adding another 2″ of bearing for the rafter.
How else can I improve the joint at this location? If I add hurricane ties like Simpson H1, will all of the nails compromise the little bearing wood that I do have?
Thanks in advance for your help.
P.S. We intend to sheetrock, tape, and paint the walls and ceiling after vaulting.