Most of the valleys around here are cut. This is the first weave on architectural shingles I’ve run across here. Doesn’t look completely out of line like some of the other photos I’ve seen on here. Any thoughts you have on it would be greatly appreciated!
Every one I’ve seen done this way ends up looking the same, you have that flap on the overlay that doesn’t lay flat. Inspected a roof not long ago, home had a lot of trees, those flaps were loaded with debris.
To achieve a woven valley installation, a roofing professional lays shingles in the valley and weaves them together. Some homeowners prefer the consistent look that a woven valley provides. But, if the shingles are not laid in the valley properly, a woven valley may not lay flat, creating bumps and detracting from the overall look of the roof.
IKO recommends that you install architectural shingles with the open valley method for the best roof performance
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Joseph,
Thanks for the information! It looks a lot better than some of the pictures I’ve seen posted here, but not the best choice for laminated shingles.
Joshua,
Thanks for the link!
Marcel,
Thank you for the information and the links. I watched a few videos from a couple roofing manufacturers and none of those recommended this type of valley installation. Do you know of any manufacturers who do recommend /allow this type of installation? Thanks!
Most Manufactures will recommend cut valleys in lieu of woven. CertainTeed that I am familiar with, allows woven valleys with 3-tab shingles, but prefer and recommend close cut. Not too many can weave a valley properly, anyways.
Architectural laminated shingles should not be used in woven valleys obviously because they don’t lay flat in the valley and could be damaged just by walking on them.
Unless there is metal flashing in the valley.
And no valley should be without it. IMHO!
Yes, that is why architectural shingles should use the open valley or cut valley for a better installation.
Years ago before the Architectural shingles came out, all we had was 3 tab roofing and weaved valleys.
Now with the less labor intensive methods is all cut valleys.
Something a roofer explained to me a while back, determining which side will receive the cut depends on if both roofs are same pitch, it’s then a cosmetic issue. But, if one roof is lower pitch, they treat that as a drainage plane and cut the steeper roof.
