No Fascia Board
This page address the installation of gutter with a home that does not have a fascia board to attach the gutter to.
This is done with the use of what is a T-Bar hanger, it is a hidden hanger with a attached strap the is secured to the roof deck.
The gutter is then suspended from the roof, with this installation a "tie back strap" should be installed as well. This will keep the gutter from swinging during high winds.