Damaged Shingles

There are hundreds of spots like this all over this roof. They range in size from dime size to quarter size. Does anybody have any idea what causes this?

[IMG]http://i641.photobucket.com/albums/uu132/jcoldren/Shingle1.jpg[/IMG]

[IMG width=600]http://i641.photobucket.com/albums/uu132/jcoldren/Shingle3.jpg[/IMG]

[IMG]http://i641.photobucket.com/albums/uu132/jcoldren/Shingle2.jpg[/IMG]

>>>

HOP Take some B vitiamins :laugh: :unsure: :dry: B)>>>

The 6 photos showed up for me just now.

Ed>>>

---How old are those shingles? I have seen that but the shingles were over 10 years old. Lanny>>>

Don't know the exact age of the roof. The present owner purchased the house in July 2004. The house was built in 1958. The online building department records only go back to 2004. The shingles are not curling or brittle. There are about 20 missing tab. There are about 20 or 30 tabs that are worn from where the seal broke and the wind has worn them from repeated lifting. BTW, I don't recall ever having hail around here so we can rule that out.>>>

Is there an oak tree or something near buy dropping stuff?>>>

Are the lines at the spots scratches or just fibers in the matting?>>>

Fibers.>>>

holidays in the asphalt saturation process?>>>

My guess would be that there was a holiday in the mat saturation process during production. Maybe they were seconds, it's hard to believe that their plant qc wouldn't have caught it.>>>

Hail damage? Just tossing another possibility.>>>

most of them look like they're in an area where someone might have gone back with a hammer and banged down some high set gun nails....without lifting tabs.>>>

Hail damage would show more granular loss its looks like other then that area they have all the granules, if we nailed our shingles in those areas around here they would blow off.Its a manufacturing defect, i would bet on that.>>>

old blistering......like a tar road in the summer.>>>

Whenever something occurs in the Keys, I always think of the wackiest explanation possible.

My guess is a drunk roofer wearing a thong and golf shoes. :laugh: :woohoo: :silly: :unsure: :ohmy:>>>

The roundness of the problem areas would make me look below for nail heads. The tree(s) are not a bad thought but the production line theory makes the most sense.>>>