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Old 12-07-2007, 07:55 PM   #1
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roofing swails shingled wrong?


I've got an ''L''-shaped ranch built in '59 that has a hip/gable roof. The house had a new roof installed just before we bought it 3 years ago. The roof was installed by the guy I bought the house from(not a pro-roofer). The swails were shingled instead of having that swail trough or swail gutter, I'm not sure what it's called, but the shingles do not look right when they overlap each other. They constantly get leaves and dirt and sticks stuck underneath them because where they end is faced up torwards the top of the swail instead of running down torwards the bottom of the swail in the direction the water flows, so as water flows along with debris, they just trap debris. Was this the correct way these swails should have been done? I look at houses similar to ours and 8 out of ten homes has the swail gutter/trough. Nothing seems to be leaking and the shingles look good other than that, but it definately doesn't look right.
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Old 12-07-2007, 08:50 PM   #2
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roofing swails shingled wrong?


Sounds like a closed valley, if done properly they are fine...Ed the Roofer should be here shortly.
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Old 12-08-2007, 02:16 AM   #3
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roofing swails shingled wrong?


I heard my name called and came running.

Firstly, Chris is possibly correct about the closed valley, but it also may be a weaved valley that you are attempting to describe.

The low trough intersection of the 2 opposing slopes you are describing are called the valley of the roof.

If they truly were installed with the butt end facing upwards as you described, you would need more than buckets to catch all of the water from the leaks.

The leaves and other organic debris gets inhibited from flowing down the roof by the abrasive texture of the granules embedded on the shingles. They should bew cleaned off on a semi-regular basis, if the pitch of the roof is not too steep for you to safely walk on it. The rotting organic debris will prematurely "Decay or Rot" the shingles, by keeping them moist for prolonged periods of time, rather than being able to be dried out from the sun and the wind.

The trough metal you were attempting to describe, is called a valley metal liner or any variation of those words. If that were installed, the shingles may not have been butted tightly at the intersection of the valley, and then that would be called an open valley.

Please, if you can, attach some photos. A ground view that shows the detail you are speaking of and also a close up shot of what shingles you think are catching the leaves and preventing them from flowing downward.

Ed
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Old 12-08-2007, 04:59 AM   #4
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roofing swails shingled wrong?


I would say a weaved valley is probably what I have, It definately looks like a weave pattern. I do clean them regularly, I have a lot of trees on my lot, especially over the house. The ends of the shingle runs going into the weave; can I tack those down by using a tar type caulk adhesive underneath? As soon as the snow melts off I'll click a few pics, my roofs not that steep. I'm paranoid about this roof; I've repaired a lot of old water damage inside the house so I want to make sure this roof is right. Thanks for the quick lesson, pics will be coming soon.
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Old 12-08-2007, 09:05 PM   #5
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roofing swails shingled wrong?


It may also be helpful to know what area of the country you are from, so that our responses could be more geographically pertinent.

I am from the NW suburbs of Chicago, and we are getting a freexing rain ice storm right now. Plus, we had a 7" snow fall several days ago and another 1"-2" Thursday evening.

Ed
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Old 12-08-2007, 11:53 PM   #6
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roofing swails shingled wrong?


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Originally Posted by Ed the Roofer View Post
It may also be helpful to know what area of the country you are from, so that our responses could be more geographically pertinent.

I am from the NW suburbs of Chicago, and we are getting a freexing rain ice storm right now. Plus, we had a 7" snow fall several days ago and another 1"-2" Thursday evening.

Ed
Ahh, nothing like summertime in Chicago!
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Old 12-09-2007, 12:32 PM   #7
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roofing swails shingled wrong?


Ditto, we're gettin' the same junk, I'm from Ft. Wayne, IN. so what you get we usually get. I wish this ice was snow though, I need the plow $. I knew I should have spent the extra money for a salt spreader! My wife was a nanny in the NW suburbs when she was at Concordia- River Forest. Man I love the houses up there! We go back up there at least twice a year just to get ribs from Mickey"s. (Oh yea, and to visit the kids she took care of)!
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Old 12-11-2007, 09:18 PM   #8
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roofing swails shingled wrong?


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