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Old 07-14-2009, 09:51 PM   #1
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particles in the gutters from the asphalt shingles


How do I use these to estimate remaining roof lifetime?

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Old 07-14-2009, 10:00 PM   #2
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particles in the gutters from the asphalt shingles


Look for bare spots on the shingles, where too much of the asphalt surface mat is now exposed.

Also, curling and cupping or crawling of the edges of the shingles.

There will always be granules in the gutters after any heavy rain event, especially when the roof is brand new or when it is getting very brittle and aged.

Ed

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Old 07-14-2009, 10:08 PM   #3
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particles in the gutters from the asphalt shingles


Quote:
Originally Posted by Ed the Roofer View Post
Look for bare spots on the shingles, where too much of the asphalt surface mat is now exposed.

Also, curling and cupping or crawling of the edges of the shingles.

There will always be granules in the gutters after any heavy rain event, especially when the roof is brand new or when it is getting very brittle and aged.

Ed
Thanks, I'll relay that info.
What is crawling?
The shingles are brittle, but no bare spots yet.
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Old 07-14-2009, 10:58 PM   #4
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particles in the gutters from the asphalt shingles


The bottom edge bowing downward, while the middle portion of the shingle starts to hump up.

Take your hand and place it flat on the desk. Then retract your fingers partially. Stop. That would be an example of the shingle material starting to have a "Crawling" effect.

Ed
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Old 07-15-2009, 11:27 AM   #5
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particles in the gutters from the asphalt shingles


Thanks; I'm thinking this person's roof is not in such bad shape.
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