Asphalt shingle cracking

dmacy · January 28, 2006, 9:48pm

Observed a roof this morning where most of the shingles had cracking through out. The roof is only 5-7 years and there are 2 layers.

Is this a defect in the shingle? What causes this cracking? It is hard to see in the pictures all the small cracks iat the shingles.

I recommend having a roofer evaluate.

They also did a lousy job of attaching the patio cover.

Thanks

Dave

kwilliams · January 28, 2006, 9:50pm

The roof is only 5-7 years and there are 2 layers…

heat?? how is the attic ventilation ???

jhagarty · January 28, 2006, 10:03pm

Looks like a Certain Teed Horizon Shangle Roof.

Cracking is indicative of a manufacturing defect.

dmacy · January 28, 2006, 10:07pm

Kevin

The ventilation was marginal at best and the insulation was poor. (Only R 13)
I am sure the attic gets very warm.

I would agree that theses shingles are defective.

Thanks

Dave

ekartal5 · January 29, 2006, 12:12am

The shingles may have been defective before installation.

Erol Kartal
ProInspect

dvalley · January 29, 2006, 12:35pm

If this roof is only 5-7 years old, you’ve got a warranty issue.

kwilliams · January 29, 2006, 2:43pm

and there are 2 layers.

would that not void the warranty ??

jhagarty · January 29, 2006, 3:09pm

David:

The roof appears to be a Certain Teed Horizon. I have found this cracking and blistering to be common with this roof. Most roofers are familiar with this problem and should be able to help with warranty coverage.

Check with the Roofing Distributors in your area. They may be able to have a factory representative look at the roof.

http://www.inspect-ny.com/roof/shingles.html

http://www.owenscorning.com/around/roofing/troubleshooting.asp

jcampbell · January 29, 2006, 4:59pm

manufacturers defect or ventilation issue

Jay_Moge · January 30, 2006, 4:26am

i think the warrenty will likely be cut in half by most manufacurers when layers are doubled. but if you ever had to try and get any warrenty covered on a roof, it’s easier to part the red sea. not only that, but that roof was not installed properly at all. i can see all the black areas that are supposed to be covered by the following score of shingles. i think the warrenty will already be void due to improper installation, but maybe they’ll never check.

rray · January 30, 2006, 8:21am

I think every manufacturer out there would also consider roof over roof to be improper installation and would void the warranty. I could be wrong, though. And if I am, just don’t tell my employees that I was ever wrong, please.

jhagarty · January 30, 2006, 10:10am

Jay:

The black lines you see are part of the shingle design. It is not necessarily an installation defect.

http://www.certainteed.com/CertainTeed/Homeowner/Homeowner+Association/Roofing/PhotoGallery/RPGPhotoGalleryNew+HorizonShangle.htm

Jay_Moge · January 31, 2006, 3:13am

No sweat Russ. ship me some margaritas and i’ll keep quiet. :mrgreen:
i only say the “cut in half” part 'cuz it happened to my neighbor about 10 years ago. and all the fighting in court wasn’t even worth the prorated 12% refund he got. oh well. cheers

Jay_Moge · January 31, 2006, 3:16am

Joe. i’ve seen those lines on archatectural shingles like in your link before, but i always thought that that was the part to cover up on regular 3 tab. i dought the overlab requirements are met in the methode shown in the pic. but i’ve been wrong before…no wait…i wasn’t.:mrgreen:

clawrenson · January 31, 2006, 3:22am

I also have concerns with the exposed - overlap areas, and roof slope. Not to mention it looks like an inferior installation. The warranty issue may even go back to the manufacturer’s specs’ - do they warrant their materials over a questionable substrate? Another issue may be “power stapling” is bad for this type of shingle.