Garage venting

[Robert Jones]

9 yr old home with a finished garage. Attic cavity above garage being used as storage. The shingles(30 yr architectural) installed on the roof above are showing signs of early deterioration. The only ventilation are the soffit vents. My opinion is that the garage is not properly vented which has more than likely led to the early deterioration of some of the shingles. The home is a Rotary built home, not that it makes a difference.

Any other ideas?

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[Brandon Whitmore]

It looks like physical damage to me. Maybe the roof was hot and someone was working up there, tree branches were rubbing (would be odd at the ridge), crazy squirrels clawing at the roof (ya never know), etc.

[Robert Jones]

Thanks Brandon,

Here is a better view of the garage roof area. Lot's of moss and scattered shingles with damage like I posted earlier. Note the lack of ventilation.

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[Jim Katen]

I agree with Brandon. The roof might not be vented properly, but that's got nothing to do with the damage in your pictures.

- Jim Katen, Oregon

[Robert Jones]

Thanks guys.