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General Inspection Discussion This is a place for general discussion about the home inspection industry. Try to keep the posts topical, but they need not be as specific as the other areas of this board.

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  #1  
Old 6/16/11, 3:07 PM
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Michael Roberson Michael Roberson is offline
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Default Bird droppings/Asphalt shingles.

Anyone have any wording on this? Inspected a lake house which is frequently visited by sea gulls. Looks like it is growing weird things.
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  #2  
Old 6/17/11, 8:46 PM
Aubrey J. Kahn Aubrey J. Kahn is offline
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Default Re: Bird droppings/Asphalt shingles.

The seagull they fly by and they'll **** right in your eye, thank your stars that cows don't fly overhead.
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Old 6/18/11, 12:37 AM
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Kenton Shepard, CMI Kenton Shepard, CMI is offline
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Default Re: Bird droppings/Asphalt shingles.

Ravens are the only bird species I know of that will damage shingles. I think they peck out of boredom. There's a photo of it in the Mastering Roof Inspection series, but finding it ... sorry
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  #4  
Old 6/21/11, 7:44 AM
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Douglas Cossar, CMI. Douglas Cossar, CMI. is offline
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Default Re: Bird droppings/Asphalt shingles.

Quote:
Originally Posted by mroberson View Post
Anyone have any wording on this? Inspected a lake house which is frequently visited by sea gulls. Looks like it is growing weird things.

Sorry...You can't be serious

How would this condition ever be considered a significant defect?

I would think its to be expected with a lakeside property.

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  #5  
Old 6/21/11, 8:18 AM
Brian A. MacNeish Brian A. MacNeish is offline
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Default Re: Bird droppings/Asphalt shingles.

Quote:
Originally Posted by dcossar View Post
Sorry...You can't be serious

How would this condition ever be considered a significant defect?

I would think its to be expected with a lakeside property.

Cheers
It can be quite a problem. The droppings provide nutrients for lichens/mosses/black algae stain.

A new house I inspected about a kilometer from me has a fairly steep, (9 or 10/12) light coloured shingle roof that looks like hell. I mentioned the gulls in my report but they did nothing at the peak for about 5-6 years......too late.....damage was already done.

They installed a zinc strip under the lower edge of the drip cap and "spikes" to prevent birds from lighting on the peak about 2-3 years ago. Zinc will not stop/clean up an existing problem. The 25-30 year shingles will have to be replaced soon!
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Old 6/21/11, 5:59 PM
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Default Re: Bird droppings/Asphalt shingles.

Out here in CA its pigeons poop we have to watch out for. I have had roofs where the galvanized valley metal was ate up from something in there poop!
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Old 6/21/11, 6:52 PM
Brian A. MacNeish Brian A. MacNeish is offline
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Default Re: Bird droppings/Asphalt shingles.

Quote:
Originally Posted by bsmith2 View Post
Out here in CA its pigeons poop we have to watch out for. I have had roofs where the galvanized valley metal was ate up from something in there poop!
acids......From the web:
"especially sea-bird droppings; because their urine is so concentrated that it is a paste of uric acid. This is white in colour"
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Old 6/21/11, 7:25 PM
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Christopher Currins Christopher Currins is offline
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Default Re: Bird droppings/Asphalt shingles.

Pigeon feces will definitely damaged asphalt based shingles, I've witnessed results many times.








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