This is a board installed along your roof s lower edge.
Roof edge fascia no show.
One of the critical elements these homes lack is a fascia board.
A drip edge that matches the roof will be less likely to show dirt staining from asphalt shingles right.
I m guessing this is not a one size fits all situation but matched white fascia drip edges definitely seem most common on homes.
Set the angle of the circular saw blade to match the slope of your roof and run the saw along the top edge of each fascia board.
Rip the tops of the fascia boards to match the slope of your roof.
Drip edges are metal sheets usually shaped like an l installed at the edge of the roof.
There s a very interesting demo video that this old house did to show the movement of water up the fascia board in 3 examples when there is 1 no drip edge 2 drip edge butt tight against the fascia and lastly iii a gap between the fascia board and the drip edge.
As such most homes built in the past have no provision for the installation of guttering systems.
No fascia knife edge roof detail how to best do.
Another couple images to help better understand my proposal.
The other shows the config of the custom bent drip.
Also called drip edge flashing or d metal they serve a vital function by directing water away from the fascia and into the gutter.
Without a drip edge water may end up beneath the shingles and may cause damage to various parts of the home.
Making the tops of your fascia boards the same angle as the roof allows you to easily place roofing material over them without creating bumps or ridges.