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Old 05-22-2011, 01:55 PM   #1
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Shingles Buckling


This spring I noticed the shingles on one part of my roof, on my rancher, appear to be buckling. The roof is about 12 years old. I cannot see anything wrong from inside the attic, no evidence of sheathing problems. Should I just keep an eye on them, or do I need to have them fixed? There is no leakage.

As to ventilation, I have soffit vents and a power attic fan.

Two photos:





Thanks!


Last edited by daveplot; 05-22-2011 at 03:23 PM. Reason: adding info about ventilation
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Old 05-22-2011, 02:08 PM   #2
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Shingles Buckling


Who installed the shingles?

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Old 05-22-2011, 02:10 PM   #3
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Who installed the shingles?
Previous homeowner had it done, he wasn't a DIY type person, so i'm going to assume it was a professional job.
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Old 05-22-2011, 02:13 PM   #4
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Shingles Buckling


Sorry to say it doesn't look professional. Looks like he just put them up in no general order.
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Old 05-23-2011, 10:43 AM   #5
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Shingles Buckling


Do you know who manufactured the shingles?

RF
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Old 05-23-2011, 12:53 PM   #6
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Shingles Buckling


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Do you know who manufactured the shingles?

RF
I have a few spare shingles... looked on the back and they are Tamko Heritage #0193

http://www.tamko.com/ResidentialRoof...phalt/Heritage
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Old 05-23-2011, 04:26 PM   #7
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Shingles Buckling


Interesting that they are all buckling in the same place... Are those all edges of the shingles? It doesn't look like. It's gotta be soemthing sheathing or structural related.

I would have a licensed and certified roofing contractor look at it, and while you are at it have him fix your chimney flashing.

I would definetly assume it was not professional just looking at the chimney flashing. Just bcause someone gets paid to do something doesn't make them professional by any strech of the imagination.

I used to use alot of Tamkos, never seen that problem before.
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Old 05-23-2011, 04:52 PM   #8
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Shingles Buckling


The shingles are racked.....improper installation.

Shouldn't be the cause of what we are seeing here though......

What about the ventilation/insulation? Looks like small holes cut in the soffits.

Maybe squirrels hiding food under them??? Looks like the tree is rather close to the roof.

Last edited by MJW; 05-23-2011 at 04:55 PM.
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Old 05-23-2011, 05:18 PM   #9
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The shingles are racked.....improper installation.

Shouldn't be the cause of what we are seeing here though......

What about the ventilation/insulation? Looks like small holes cut in the soffits.

Maybe squirrels hiding food under them??? Looks like the tree is rather close to the roof.
That's what I thought at first too MJW, but if you look close I don't think those are all shingle ends. Kind of hard to tell from the small pics that's why I asked if they were all shingle edges.

LOl Squirrels, seriously?
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Old 05-23-2011, 07:39 PM   #10
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Shingles Buckling


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Originally Posted by Grumpy View Post
That's what I thought at first too MJW, but if you look close I don't think those are all shingle ends. Kind of hard to tell from the small pics that's why I asked if they were all shingle edges.

LOl Squirrels, seriously?
Haha, torn off plenty of shingles with nuts, corn, etc. under them. Could be from birds too, I guess.

I still think those are all shingle ends. Just look, it's every other one up the roof. Look about 40 inches to the left on the first pic. Those are starting to buckle up also.
I'm curious as to what the problem is.
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Old 05-23-2011, 08:17 PM   #11
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What about the ventilation/insulation? Looks like small holes cut in the soffits.

Maybe squirrels hiding food under them???
I have soffit mini-vents: along the front of the house there are 15 2" holes and 5 4" holes (larger in the front porch). Along the back there are about 36 2" holes. They all have screen over them.

There is a Masterflow powered roof vent @ 1000 cf/min.

The sqft of the house is 1400.

As to insulation, i'm not sure, but I know it's not enough compaired to what is used today. It's whatever was code in the 70s. I do plan to add more.

The tree at the back corner of the house is touching the roof, but not for long. It has a date with a saw one night this week.

Here is the original photo (large, 5mb in size), should help see the shingles better http://plotts.us/images/DSC02136.JPG

Here is a photo from 2007 which shows the entire roof. In 2009 I had the roof professionally cleaned to remove moss, algae, and lichen. http://plotts.us/images/DSCN0160.JPG

The center and left roof sections (when looking at the picture of the entire house) don't have any buckling going on. So it's something with this one area. The back of the house is ok too.

I have no problem getting up on the roof for any additional photos if you'd like.

Thanks.

Last edited by daveplot; 05-23-2011 at 08:20 PM.
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Old 05-23-2011, 08:24 PM   #12
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Shingles Buckling


fish mouthing like you have there is usually a sign of poor ventilation. Just because you have sollit vents does not mean you have proper ventilation. Do you have insulation in the rafter bays? Where does the fan blow out? does it blow out of gable vents?
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Old 05-23-2011, 08:43 PM   #13
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fish mouthing like you have there is usually a sign of poor ventilation. Just because you have sollit vents does not mean you have proper ventilation. Do you have insulation in the rafter bays? Where does the fan blow out? does it blow out of gable vents?
No insulation between rafters. The fan blows out the back, middle of the roof, just below the ridge.
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Old 05-23-2011, 10:22 PM   #14
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No insulation between rafters. The fan blows out the back, middle of the roof, just below the ridge.
Your 2" vents have 1.5" NFVA and the 4' with 2.75" NFVA should have 9"NFVA per foot on each soffit to vent 1/150; http://www.lomanco.com/ProductPAGES/CirkVents.html

The round vents should be touching each other or continuous for minimum vent supply; http://www.airvent.com/homeowner/pro...it-specs.shtml

The powered exhaust is pulling conditioned air from the house or crawlspace/basement.

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Old 05-24-2011, 10:16 AM   #15
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Shingles Buckling


My WAG is that there is some sort of sheathing/rafter issue (but I'm not sure what) and the vertical pattern is created by "racked" shingle installation and the buried nail maybe didn't get installed, allowing the butt ends to separate some.

And I'll 2nd the opinion that the chimney flashing needs to be eyeballed.

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