Opinion on this 3-tab valley

[Gregory A. Liebig]

Usually I'm used to seeing closed cut valleys but this one is unusual. Suggestions would be greatly appreciated.

Thanks in advance for your help

[ccurrins]

Woven valley. Common around here.



http://www.gaf.com/General/GafMain.a...App=TRAI%26Uid=

[Rick Maday]

Originally Posted by ccurrins

Woven valley. Common around here.



http://www.gaf.com/General/GafMain.a...pp=TRAI%26Uid=

Ditto

[Barry Adair]

Originally Posted by gliebig

Usually I'm used to seeing closed cut valleys but this one is unusual. Suggestions would be greatly appreciated.

Thanks in advance for your help

that's one is typical of a poorly woven valley

it take foresight and layout to properly weave and have shingles line up

check this for further info
http://www.stargroup.com/Residential...html~mainFrame

[Rick Maday]

Hmmm...looking at the pic again, it seems to be architectural shigles rather than 3-tab. Could be an illusion too.

[Barry Adair]

Originally Posted by rmaday

Hmmm...looking at the pic again, it seems to be architectural shigles rather than 3-tab. Could be an illusion too.

Rick,
Greg's pic are "laminated shingles"!

[Rick Maday]

Originally Posted by badair

Rick,
Greg's pic are "laminated shingles"!

Yes, thanks.

BTW, good to see you back here.

[Gary L. Farnsworth, CMI]

Lapped roof valleys are always suseptible for leakage. Look and the picture, and imagine where the water drains. Water can flow down the right side, into the grooves/joints/slots of the other shingles. Suggest replace with metal drainage valleys.

[Barry Adair]

Originally Posted by rmaday

BTW, good to see you back here.

eyes paid da gubment fer tha day off!

always good to see the OWL

[Frank Albert]

Woven is fine if the shingles are softened in the sun before positioning, and when woven so they cross near the center. Some of those cover 2-3 courses on the opposite side. I do them often, but that is poorly done.

[Joe Funderburk, CMI]

Cut valleys should be a heads up...the roofer took the fastest, easiest, cheapest way to install the roof. Did he take any other shortcuts?

[Jeffery L. Haynes]

Woven valley's such as this are typical......I do them myself however where he got off on is how he weaved them in.......as you go up the valley the intersecting of the shingles are off......almost 12 inches away from the valley itself...................this often happens when you have two different pitches and or the installer is not paying attention to detail.

Just curious, was there two different pitches going on?

[Jeffery L. Haynes]

Originally Posted by gfarnsworth

Lapped roof valleys are always suseptible for leakage. Look and the picture, and imagine where the water drains. Water can flow down the right side, into the grooves/joints/slots of the other shingles. Suggest replace with metal drainage valleys.

I've done both Gary.........woven valleys are just as good as metal valleys if not better. For an inspector to suggest an alternative method is exceeding SOP's. This method is fine.....its simply that the installer was not paying attention to the valley line.

The only way these types of valleys leak is from 1.) stepping in them 2.) perpendicular shingle did not extend far enough past the valley and 3.) the installer nailed to close to the valley.

[Terry Neyedli]

Originally Posted by jfunderburk

Cut valleys should be a heads up...the roofer took the fastest, easiest, cheapest way to install the roof. Did he take any other shortcuts?

Joe:
Probably did not install the metal flashing underneath.
Just a guess.
T.Neyedli CHI(P)
www.alphahomeinspections.ca
BPCPA #47827

[Jae Williams]

A well woven valley is hardly noticeable. You're looking at it--then it dawns on you what you're looking at. Both my son, and son-in-law, are roofers and use this technique a lot.