Cut valley - weave

Inspected a house today- this was detail at valley- cut valley until the last 2 -3 rows where it became a woven valley- Is this a defect, just poor work or both- it was a new house.

Thanks for any![GOPR0300|666x500](upload://bY

a5SIrBRend0tfr9r2PfCawSBi.jpeg) commentary

I’ve never seen a partial weave before. Did the valley appear to jog? Are they hiding?

What type of roof was it? I ask because I’ve seen this twice before, but both honestly made sense to me in regard to the ‘why’ as they both had different pitches throughout the runs.
One was basically a valley on a gambrel with a very long sprocket. The other was a valley created by a porch covering that had a considerably lower slope than the roof it tied into on the other side.

The valley was on the same plane - no change in slope

This is a better pic- all on the same line to gutter

I don’t know that I’d actually call anything out on it. The line looks good, and it doesn’t look steep enough to risk drainage rut or ice damming as an effect. If I were guessing, I would think multiple installers on the runs and one of them relatively new to the work.
Definitely want to relay it to the client so they are aware, but unless you saw something specific I don’t think it is something I’d include as a flagged item.


I agree with Sam.

1 Like

Thank you very much for the help!

Nothing wrong with it as long as it was weaved correctly and the rest of the valley was done right.

Roofers are taught to weave the first one or two courses when doing a closed center-cut valley. There are several technical reasons for this. The biggest one is if you cut the first course you would have exposed valley flashing and it would look strange.