I have a 7'D x14'W concrete porch over which I would like to construct an almost flat roof (pitched about 1"/ft down the 7' depth.) The house wall is brick veneer. The second floor joists are 2x10 16" OC and extend out to a 2x!0 header to carry the mansard wall and form a
16" soffit covered with 3/4" ply.2x8 joisting, fully supported with posts at the outer end, would do it but rather than drill into the brick and then bolt on a ledger on the brick and use joist hangers, I wondered about hanging the roof joists from the second floor lookouts (after removing the soffit), perhaps using simply a large-enough joist hanger (or two) with the nailing flanges bent flat, or some other piece of hardware that I've yet to discover.
Thoughts?