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-   -   Why Is My 4 Year Old Roof Doing This? (http://www.diychatroom.com/f9/why-my-4-year-old-roof-doing-195618/)

jimmy77611 02-06-2014 09:53 AM

Why Is My 4 Year Old Roof Doing This?
 
1 Attachment(s)
Brand new 4 year old house. I noticed the diagonal runs of shingles lifting about a week or so ago. It's been very cold (~30*F) and windy (20-40 mph). It's the left side of the first far left tab of every shingle. They've come un sealed and lifted.

Any help/advise is greatly appreciated.

joecaption 02-06-2014 10:06 AM

Does not look like wind damage to me.
If it was wind it would have lifted the taps not just on the end of every shingle.
Looks more like a moisture problem in the attic causing moisture on the back side of the shingles.
Are there any soffit vents?
Looked in the attic for any mold or staining on the sheathing?
Dryer, bathroom, kitchen all vent to the outside?
Adding your location to your profile and the brand of shingles would be a big help.
http://prugarinc.com/shingles/proced...e-to-shingles/

jimmy77611 02-06-2014 10:16 AM

Thanks for the reply.

I'm in North Texas. There are soffit vents along with the vents at the top of the roof. I have radiant barrier decking, so with the foil side to the inside of the attic, I can't see any sign of moisture up there, but I'll give further inspection.

Everything vents to the outside through the roof. I'll inspect all the vent tubing to make sure it's intact.

This is on the back side of my house, where there aren't any bathrooms/kitchen etc. The sections of roof where all those things are, and vent, look fine. This section of my roof also doesn't get sunlight.

jimmy77611 02-06-2014 10:35 AM

I just got in the attic to check everything. No sign of moisture at all and all the vents look good. The decking looks as good as the day we bought the house, no mold or mildew anywhere. We have some boxes up there too, and they don't look like they've had any moisture damage to them.

Colbyt 02-06-2014 03:23 PM

Looks a lot like a 3 nail shingle job to me. The installer did not lift the tab and add the 4th nail.

roofermann 02-06-2014 05:03 PM

Quote:

Originally Posted by Colbyt (Post 1302538)
Looks a lot like a 3 nail shingle job to me. The installer did not lift the tab and add the 4th nail.

Bingo!:thumbsup:

gregzoll 02-06-2014 06:10 PM

Your shingles do not have the tar at the front on the bottom of the tabs. The tar is actually at the top above the tab on the face.

If you want shingles that do not lift, you need the Elk Shingles, that now GAF manufactures. "Elk claimed its lamination made its product, at 1/2-inch, twice as thick as others on the market. The base was UltraMat® reinforced fiberglass, whih aided in preventing damage from fire, rot and warping. The WindGuard® sealant helped protect Elk shingles from wind blow-off."

Three Tab shingles are the worse thing to put on buildings. They are cheap, and you get what you are seeing, when they start to fail. All you can do come Spring, is go up there and use some Black Jack, to glue the tabs down, so that they last longer. Once they start lifting, then you get failure and water intrusion.

PatChap 02-06-2014 06:33 PM

Looks like the shingles were stepped at 4inch offset, not racked. I Doubt they were 3 nailed, I bet they were high nailed or overdriven if anything.

one cut 02-06-2014 07:39 PM

I'm putting my money on a manufacturer defect.

gregzoll 02-06-2014 08:51 PM

Quote:

Originally Posted by one cut (Post 1302634)
I'm putting my money on a manufacturer defect.

Not likely. The defect was the person(s), that put that roof on that home.

ParagonEx 02-07-2014 06:58 AM

Quote:

Originally Posted by Colbyt
Looks a lot like a 3 nail shingle job to me. The installer did not lift the tab and add the 4th nail.

Why would the installer need to lift the tab to add the 4th nail?

Look at the picture. He clearly "stair-stepped" the shingles.

one cut 02-07-2014 11:32 AM

I'm trying to imagine what a roofer could have done that would cause just that corner to lift. I'm stumped.

Fairview 02-07-2014 11:39 AM

I'm betting on manufacturing processes and I'd even put more money down that they will look just fine about July 4.

Colbyt 02-07-2014 01:29 PM

Quote:

Originally Posted by ParagonEx (Post 1302774)
Why would the installer need to lift the tab to add the 4th nail?

Look at the picture. He clearly "stair-stepped" the shingles.


Most of the guys who do this for a living do not nail a full row across and then do the next row. They work 3-5 shingles wide up the roof and then start again at the bottom. As the seams have to be staggered, when they start the second upward run they have to lift the nailed shingle after they slide the shingle under to nail it. Check out the 10th picture down on this page: townsendroofing.com/our-step-by-step-re-roof-process.php

ParagonEx 02-07-2014 03:46 PM

Quote:

Originally Posted by Colbyt
Most of the guys who do this for a living do not nail a full row across and then do the next row. They work 3-5 shingles wide up the roof and then start again at the bottom. As the seams have to be staggered, when they start the second upward run they have to lift the nailed shingle after they slide the shingle under to nail it. Check out the 10th picture down on this page: townsendroofing.com/our-step-by-step-re-roof-process.php

What are you taking about? If you've been installing shingles that are stepped that way, you're doing it wrong.


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