Below are some examples of Cantilever Overhangs. These 2nd Floor overhang areas are huge cold air infiltration problems. The larger the overhang, the colder the floor will be!
A view inside of of the Cantilever Overhangs, notice the large amount of space inside the cavity!

Each king of overhang has a way to insulate and stop air infiltration. Below are some examples of dense packing the overhang with cellulose insulation.