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Modified Bitumen installation question.

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[#1] Posted: 12/07/2009 - 11:20:17 AM
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Are there any manufacturers that allow the installation of granular coated modified bitumen roofing to be installed vertically (parallel to the rake) instead of horizontally (parallel to the eave)?


Brandon

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Modified Bitumen installation question.
[#2] Posted: 12/07/2009 - 2:57:00 PM
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I would imagine no as this would make it more prone for leakage at the seams, eh?
Matthew Steger
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Modified Bitumen installation question.
[#3] Posted: 12/07/2009 - 4:24:52 PM
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http://www.gaf.com/Content/Doc...6008.pdf depends on the slope.
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Modified Bitumen installation question.
[#4] Posted: 12/07/2009 - 5:19:29 PM
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Ahh. Thanks Erik

So it looks like over 1/2" per foot, they require that it be installed perpendicular to the ridge-- good to know.

Now I'll have to find out if that applies to torch down, or just cold applied methods.


Brandon

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Modified Bitumen installation question.
[#5] Posted: 12/08/2009 - 12:16:47 AM
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http://www.certainteed.com/res...nual.pdf
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Modified Bitumen installation question.
[#6] Posted: 12/08/2009 - 1:19:01 PM
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Erik,

I owe you one, oh, make that 2.

Certainteed's directions were one of the sets I read. Don't ask me how I skipped right over the important part I was looking for. I think I'm slipping.

Thanks.

Brandon

Portland Home Inspector
   
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