I wonder where the shingles are hiding & where the water might want to go…
Oh yeah & that results in this type of damage
Even with the shingles overhanging the sheathing by 2″, you still need to install a drip edge to prevent water from being wicked back by surface tension & wind. That is one reason why the drip edge has that little kick-out & window sills have a kerf on the bottom. For more on getting this & other flashing details correct; Getting the details right: 4 biggest roof flashing errors to avoid
Related posts:
Wacky Weds: Politics can be funny... & a few quick thoughts
Wacky Weds: Levels of Perfection / Fit & Finish
Wacky Weds: Deep Freeze Inside?
Wacky Weds: Baby it's cold out, even for this wall
Wacky Weds: Cellulose Duct Insulation?
Wacky Weds: Why do we always say grade 3 for fiberglass insulation?
Wacky Weds: A comedy of errors
Wacky Weds: Firewall? Check...