With roofing you again have a couple of choices.
How to extend or add a roof overhang to building.
This is a super simple project and requires just a f.
Cut rafter tail extensions three times the length of the overhang that you want to add using lumber the same size as the existing rafters.
Of the existing material is good.
You will need to buy some new drip edge because the sides of the overhang are longer than the ole drip edge and will require extensions.
If you only have 1 2 inches 2 5 5 1 cm of overhang you likely need to go with this option.
Watch me build a super simple overhang roof on the side of my shop to cover fire wood from the elements.
With the rafter extensions installed you can turn to trimming sheathing and roofing.
Attach the facia board and install the same size roof sheeting mine was 1 inch boards and the drip edge.
Position the rafter extensions against the existing.
First nail the subfascia and fascia to the rafter tails next match the thickness of the existing roof sheathing as best as you can within 1 8 in.