Another damaged roof question

[Mark P]

I found this interesting. This house was from a few daze ago. Only 8 years old. I just wrote it up as needing all the ridge caps replaced. The pictures pretty much say it all. The higher I went the worse the damage got, but only to the ridges. Any theories on why they are so worn?

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[hausdok]

Hi,

Maybe they stressed those while bending them.

OT - OF!!!

M.

[Erby]

Roofers who are doing it right use a separate ridge shingle instead of cutting a regular shingle. Obviously, these are defective ridge shingles.

[Jerry Simon]

Acidic bird droppings. Bunch o' droppings in last pict

[caryseidner]

I saw the same thing on an inspection last weekend, although I didn't think much of it as it was a 20 year old roof that was worn all over.

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[Brian G]

Freaky! If it were stress from bending most of the damage would be around the peak of the bend, not so evenly spread. If it were bird droppings we would see this kind of thing all of the time, and the damage wouldn't be tightly restricted to the caps.

The shingles are architectural, but the caps are plain-Jane's. I'd say either the caps are factory-defectives or the sorriest, cheapest things the roofer could lay his hands on. My money is on defectives. I don't know if even cheapo shingles would deteriorate that much in just 8 years.

Brian G.

It is Recommended to Monitor the Cap Shingles [:-slaphap[][][:-tong2][:-dev3][:-boggled[:-mischie