Allowed.
Apron headwall flashing. Not Header flashing.
Mastering Roof Inspections
Nachi website mentions ’ The flange that rests on the underlayment is only tacked. Shingle installers will pull the tacked nails and slide the shingles beneath the flashing .’
I can accept that the shingles can be beneath the headwall flashing (or apron flashing). Do you know the requirements for the fasteners?
Exposed fasteners, applicable per application, in the case headwall apron flashing, require a dab of caulk/sealant/mastic/plastic cement atop the head of the fastener to the shingle. Use to know code but dropped code years ago.
Piling on, these pictures hit one of my pet peeves, upper roof gutter downspouts draining directly onto the lower roof surface. Its a shame to see that kind of shortcut by the gutter contractor on a new home just to save a few bucks. All that rainwater volume from above can really do a number on the lower roof surface over time. I hope they did a great job on the step flashing on the side wall. I can’t tell if they have at least a 1" clearance above the roof surface for the siding over there, but they sure are asking for trouble discharging extra rain water from above at that location.
That’s because we have significant snow and ice buildup in Minnesota, which would render them useless, in fact, may create other significant issues with ice damming, solar radiation melt, etc…
Let’s not overlook the problem with handling 3 roof planes of rainwater discharging into a single (standard) downspout. Betcha’ there is overflowing going on, especially when there gets accumulation of debris built up in there!! That lower gutter and downspout should be increased in size to handle the large water volume… that is assuming the upper gutters/downspouts are not redesigned and properly reinstalled!!
I see an additional problem.
Poorly installed or missing drip edge flashing. The high volume of water will compound this issue.
@bhull1 to your point
I asked about this in my original post ( Also, the sheathing is visible from ground, I think the local water splashing is going to damage the sheathing. is this an issue as well?)
It is not required to install drip edge flashing in NC, but I agree with you. I will show this concern in the report.
Overall, I think this sidewall is a mess and poor design. Water is going to go everywhere except where desired. All of the above posters had legitimate concerns.
Drip edge is required by IRC. Does NC not follow IRC?
Drip edge is also required by shingle manufacturer’s installation instructions.
The manufacture’s instructions are key here but sometimes it can be fairly difficult to confirm the manufacturer, unless you are a roofer by trade I suppose. MN follows IRC but does not require drip edge unless the manufacturer requires it.
From the link…
Likely due to our strict standards for Ice Barrier!