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Old 11-02-2011, 07:25 PM   #1
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How To Distinguish Between Felt Weight


Hi There,

I'm in a situation where I need to figure out what weight of felt was used when the roof was installed. Any help is greatly appreciated!

Thanks in advance,
Rickey

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Old 11-02-2011, 07:28 PM   #2
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How To Distinguish Between Felt Weight


Why the issue?
Lift up an edge and check.

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Old 11-02-2011, 07:38 PM   #3
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How To Distinguish Between Felt Weight


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Why the issue?
Lift up an edge and check.
Our roof inspector noted that there is only 1 layer of felt when there should be 2 and is recommending a new roof when the current one is only 9 years old and has a life span of 25. My buyers are getting spooked, thus I need to figure out the weight and if it meets local standards.

So it's just printed on the material?

Thanks Sixeightten!
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Old 11-02-2011, 08:10 PM   #4
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How To Distinguish Between Felt Weight


It wont be printed. A roofer can tell the weight by feeling the thickness. The #30 is twice as thick as the #15.
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Old 11-02-2011, 08:18 PM   #5
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How To Distinguish Between Felt Weight


Makes no sense. Where does it say there should be two layers of felt? Get a real inspector!
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Old 11-02-2011, 08:54 PM   #6
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How To Distinguish Between Felt Weight


A 2/12 up to 4/12 require two layers per IRC, though CA is usually way stricter on most everything.

Did you ask your local Building Department yet?

Gary
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Old 11-02-2011, 08:57 PM   #7
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How To Distinguish Between Felt Weight


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Originally Posted by GBR in WA
A 2/12 up to 4/12 require two layers per IRC, though CA is usually way stricter on most everything.

Did you ask your local Building Department yet?

Gary
Where was it said that it was less than a 4 pitch?
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Old 11-02-2011, 09:30 PM   #8
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How To Distinguish Between Felt Weight


"Where does it say there should be two layers of felt?"----- it was your question.

RR- start reading about felts/papers and their weights on page #4, here: http://www.dickseibert.com/martin.pdf

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Old 11-02-2011, 09:35 PM   #9
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How To Distinguish Between Felt Weight


Quote:
Originally Posted by GBR in WA
"Where does it say there should be two layers of felt?"----- it was your question.

RR- start reading about felts/papers and their weights on page #4, here: http://www.dickseibert.com/martin.pdf

Gary
I'm talking about in the original post. No where does the OP mention the pitch of their roof.

Maybe I worded my question wrong to the point it would only make sense to me.

Why does the inspector think there are two layers of felt needed? Most inspectors I've met have no knowledge of roofing.

Last edited by ParagonEx; 11-02-2011 at 09:38 PM.
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Old 11-03-2011, 05:21 AM   #10
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How To Distinguish Between Felt Weight


Quote:
Originally Posted by RealtorRickey View Post
Hi There,

I'm in a situation where I need to figure out what weight of felt was used when the roof was installed. Any help is greatly appreciated!

Thanks in advance,
Rickey
Just go to the local home center and feel for yourself. That's the best way to know what you're dealing with.
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Old 11-03-2011, 02:41 PM   #11
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How To Distinguish Between Felt Weight


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Just go to the local home center and feel for yourself. That's the best way to know what you're dealing with.
I tried that and I'm no longer allowed in Home Depot. Wasn't sure if the clerk was a girl or a boy............
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Old 11-03-2011, 02:52 PM   #12
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How To Distinguish Between Felt Weight


Quote:
Originally Posted by GBR in WA View Post
A 2/12 up to 4/12 require two layers per IRC, though CA is usually way stricter on most everything.

Did you ask your local Building Department yet?

Gary
It's not just 2 layers. They are to be half lapped. So, in this case, one layer of #30 does not equal 2 layers of #15.
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Old 11-03-2011, 03:04 PM   #13
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How To Distinguish Between Felt Weight


Or is he talking about the eaves? Two layers of 15# felt with roofing cement between them is acceptable instead of I&W.
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Old 11-03-2011, 05:27 PM   #14
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How To Distinguish Between Felt Weight


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I tried that and I'm no longer allowed in Home Depot. Wasn't sure if the clerk was a girl or a boy............
That's a different kind of "felt" my friend.

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