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Old 01-22-2012, 08:33 PM   #1
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Help finding roof leak...no attic


Hi everyone, I was hoping for a bit of help with a roofing issue I have...especially since I do not know much about roofs!

I live in the upper unit of a duplex I own. This summer I had a small leak in my kitchen ceiling. I went up on the roof to take a look and didn't really see anything out of the ordinary that stuck out. Ironically, the water stopped leaking and I didn't think much of it after that (poor decision). Well today I was in my living room and noticed an area of the the wall that is starting to crack and the paint is starting to bubble...obviously the water is just traveling. I live in Wisconsin and there is quite a bit of snow on my roof now and I do not think I'll get back up there until the Spring.

Does anyone have any ideas or thoughts on what I should be looking for next time I go up there? The shingles are good, flashing looks good around the chimney and vents.

Any help is appreciated!

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Old 01-22-2012, 09:11 PM   #2
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Help finding roof leak...no attic


Pictures help tremendously in this case.

Are there any vents (plumbing, range hood vent, HVAC lines) or other penetrations in this ceiling?

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Old 01-22-2012, 09:14 PM   #3
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Help finding roof leak...no attic


There are two plumbing vents I believe and the chimney. I wish I could provide pictures, but I won't be able to get up on the roof until Spring. Could it possibly just be the flashing around the vents and chimney?
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Old 01-22-2012, 11:03 PM   #4
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Help finding roof leak...no attic


If you are not missing any shingles, the likely leak pathway points are going to be valleys, penetrations, and sidewalls (i.e. chimneys, walls, elevation changes).
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Old 01-23-2012, 09:39 AM   #5
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Help finding roof leak...no attic


even one nail located in a valley or between tabs of shingle is amazing how much water it can let in.
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Old 01-23-2012, 09:50 AM   #6
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Help finding roof leak...no attic


First place I look is at the seals on the roof jacks. That's the seals around the PVC pipes going throught the roof to vent the sewer gases.
They now make a simple rubber ring that gets slid over the pipe at has a flange large enough to go out over the metal or ABS base it's mounted to.
Great for a winter time fix since the shingles are going to be brittle when cold. There only about $5.00 and take all of 30 sec. to install.
If you choose to wait to repair this plan on some roof decking damage, possable, rafter replacement, replacing insulation and drywall.
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Old 01-23-2012, 03:47 PM   #7
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Help finding roof leak...no attic


Quote:
Originally Posted by mae-ling View Post
even one nail located in a valley or between tabs of shingle is amazing how much water it can let in.
Maeling, you're right on about that! I had a leak and searched high and low looking all over the roof and inside the attic. Couldn't find it......finally, during a heavy rainstorm, I went to the attic and heard a persistent drip, drip, drip. Went on the roof the next day, and, sure enough, one measley nail hole in an aluminum valley letting in all sorts of water.
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Old 01-24-2012, 07:50 PM   #8
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Help finding roof leak...no attic


does the roof have a metal ridge vent??? i've replaced several over the years because they eventually leak at the joints.
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Old 01-24-2012, 09:13 PM   #9
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Help finding roof leak...no attic


What kind of roof?

Any chance the wall damage is coming from a plugged gutter?

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