Shingle Type-help

I have a question about the shingle type on a home I just inspected. Typically, architectural shingles have a very distinct look, these were not installed like 3-tab but did not have all the characteristics of architectural. Am I just overthinking it? Heres a picture.

Looks like a “strip shingle” or “no-cut” shingle. Several brand names available in that style.

Looks like, “Single strip low slope shingles.” Have not seen that type of shingle for some time.
Two Tone Black.

The installation is wrong.
1: Strips Overlap ><1/2".
2: No rain notch diverter.
Got an image of the valleys? Are they woven?
Let await others to chime in.
low slope shingle defects

These shingles are on an

almost million dollar home built in 2016. Here are some more pictures.

Heres a valley

better pic

California cut valley. About a gazillion homes with that type of valley. Some people don’t like them but they are widely accepted across N. America.

I don’t see a problem with the lack of a notch. Most strip shingles have them but I wouldn’t call it a defect. It’s just the shingle design.

The overlaps that Robert mentioned are not a good thing, especially if there are a lot of corners sticking up and it’s in an area that gets a lot of wind. You’d want to make sure they’re well bonded if there are a lot of corners sticking up for the wind to grab, since that would slightly reduce the wind resistance of the roof.

It looks pretty clean to me; notice the way they neatly cut the shingles around that vent.


It’s been a while since I was in the roofing industry, however this looks like it might be an Owens Corning dimensional (architecture) shingle roof. The dimensional overlap on the shingle’s laminated base appears to look typical to me, based on the photos distance from the shingles.

It appears to have a ridge vent system. The fasteners on the center piece of the ridge cap were not sealed. The shingles appeared to extend to the outside edge of the gutter. This is not recommended by the manufacturer. The manufacturer recommends a drip edge, typically one knuckle over the shingle molding/nosing flashing on the edges of the roof surface. This may be an innovative gutter protector by a genius roofer to keep debris out. Monitor this, really not a bad idea and a first for me, but time always tells the real story.

As long as the shingles are approx 5” from being seam over seam, the layup appears to be acceptable. I used to lay up my California valley 2” from the center of the valley, but if it’s not collecting dirt, debris, or bucking water, it is OK. Nice granulated plumbing jacks!

Thanks everyone for the input, it really helps to have another set of eyes on things.