Is this how you do it?

[Scott Douglas]

I'm watching a roof being put on across the street.
I haven't seen a 'Roofing Company' truck yet.
This is how they're laying the first tiles down...

Is that really how they're doing valleys now?

[herr_oberst]

The valleys on my roof were woven in using the three tab. No metal. It looks nice, and no chance of a leak.

[Scott Douglas]

Yeah, mine were too, that's why I asked. I don't think these guys are really 'pro's' if you get my drift.

[Zeke]

I don't like the weave look, I like to see the definition of the valley. Yes, having the ridge helps to keep water from undercutting the opposite side. If the sheds running to the valley are more or less equal the water will meet and sort of cancel the issue.

It looks OK to me but they could do a better job of staggering and I like to see at least a couple inches of metal to keep the valley clean.

[porsche tech]

When we had ours done a few years ago they wove the shingles across the valley. It looked different and I asked the guy about it and he said that is what the manufacturer requires for the warranty.

[Scott Douglas]

Here's our one easily visible valley. It helped that I had straightened out the garage roof sag before it was put on.

Hasn't leaked since it was installed so I'm happy 'bout that.

Funny, the guys across the street aren't even working on it today, yet.

[juanbenae]

Many agencies want to send inspectors out as seldom as possible so they will often look to have a portion of the shingles down leaving open the underlayment. They will likely return and set the plumbing vent pipe flashing for the inspection. See the way they went right up to the vent pipes?

They might have required a nailing inspection prior to install of anything if it was re-sheeted. A seasoned, older inspector might not even get up on the roof for the inspection in its current state especially if he/she is familiar with the company doing the work.