» Much of a difference between 15 and 30 felt paper?

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  Post subject: Much of a difference between 15 and 30 felt paper?
PostPosted: Fri Feb 15, 2008 6:14 pm 
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THX


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PostPosted: Fri Feb 15, 2008 7:18 pm 
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in New England 15# felt about $15.00 432 sq ft roll 30 # felt $18.00 200 sq ft roll

was that the question?


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  Post subject: THX, but no. Using them/it on new roof?
PostPosted: Fri Feb 15, 2008 8:17 pm 
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THX


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PostPosted: Sat Feb 16, 2008 1:07 am 
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guy knows three letters.

gweedo


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PostPosted: Sat Feb 16, 2008 1:53 am 
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ATLANTA, your welcome...


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PostPosted: Sat Feb 16, 2008 3:53 am 
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he just likes long subjects


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  Post subject:
PostPosted: Sun Feb 17, 2008 4:35 am 
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15 pound felt is the "default" for most applications.

30 pound is used for lower slopes (under 4:12 where shingles are permissible) with a "double lap", i.e. lay one course, then where you'd normally lay a 'normal' course about 3" down overlapping the felt below, a double lap is where the top layer starts half way up the bottom layer (I hope that made sense).

OK, so I started this response about 2p & am finishing this detail here @ 10:35 cst.

Image

This detail should show the alignment of a low slope, double lapped 30 # application.

For slopes 8:12 & steeper, 30 # is the typical felt used because it's thicker & less prone to tearing when walked on or worked on / around / with.

Now let's see who has responded since I started...

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  Post subject:
PostPosted: Sun Feb 17, 2008 5:19 pm 
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oh, he was sayin thanks.
THX.
duh.

gweedo


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PostPosted: Mon Feb 18, 2008 2:35 am 
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Can't put anything past you, gweed.

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PostPosted: Mon Feb 18, 2008 9:43 pm 
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The differance is kinda like name brand tennis shoe -vs- generic. You can run and jump in both. One is higher quality and costs more.


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PostPosted: Mon Feb 18, 2008 9:55 pm 
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I wonder why qweedo rubs you the wrong way so much Ranch. I personaly like his posts. Humerous and not as serious as everyone eles.


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PostPosted: Mon Feb 18, 2008 11:40 pm 
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I like a high quality fiberglass 15# felt such as the Certainteed Roofer Sellect.

The past 100+ roofs I've done have all had the Roofer Sellect felt. I had one new roof papered in and not one piece of felt blew off with winds up to 60 mph. What amazed me was I ran short ice and water and left the bottom untacked on one run and that felt didn't even blow off!

Cheap 15# costs $12-14 per roll I pay $22 per roll for the Roofer Sellect.

30# unless covered right away has a tendancy to wrinkle. Just like my blue jeans I like my felt as flat as possible. (That one was for Gweedo!!!) :D

Several years ago my father went to work after a big wind storm to find the 100sq building he had papered in with fiberglass felt didn't loose any paper. He looked across the street and saw the roof next to his had lost shingles.


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  Post subject:
PostPosted: Thu Feb 21, 2008 2:14 am 
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THX RooferR

but dont worry.
you dont last long here
unless your well respected.


gweedo


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  Post subject: Re: Much of a difference between 15 and 30 felt paper?
PostPosted: Thu Feb 21, 2008 9:31 pm 
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ATLANTA wrote:
THX


I don't know about the rest of the guys here, but in Denver, CO we need 30#. Fifteen just doesn't cut it in our climate. Likewise, on anything above a 7/12 pitch it is dangerous to walk on without serious amounts of staples.


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  Post subject: Re: Much of a difference between 15 and 30 felt paper?
PostPosted: Fri Feb 22, 2008 1:00 am 
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caseycolvin wrote:
ATLANTA wrote:
THX


I don't know about the rest of the guys here, but in Denver, CO we need 30#. Fifteen just doesn't cut it in our climate. Likewise, on anything above a 7/12 pitch it is dangerous to walk on without serious amounts of staples.


Perhaps you should try Roofer Select, it is a different animal from other 15# felts.

What do you mean 15# doesn't cut it in your climate?
What are its short comings?
What doesn't it do that it is supposed to?

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