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-   -   Cedar Shingles and Open Valley (http://www.houserepairtalk.com/f34/cedar-shingles-open-valley-14958/)

jslemko 10-25-2012 06:31 PM

Cedar Shingles and Open Valley
 
I am looking to replace the cedar shingles on a small addition at the back of my house. I have never shingled with cedar before and am unsure of the proper procedure for shingling valley's.

I am planning on using a prefinished (black valley) and ice/water shield under the surface, however I wasn't sure if I should be using a line of roofing tar beneath the shingles on the valley or if this is needed.

Any help would be greatly appreciated.

oldognewtrick 10-25-2012 07:18 PM

If you click on the link below it will detail every aspect of the installation of cedar shake. Remember, if you look between the slates of the shakes and see felt paper, you have installed the underlayment wrong.

http://www.cedarbureau.org/installation-and-maintenance/roof-manual/

Oh, and welcome to House Repair Talk!

jslemko 10-26-2012 02:02 PM

Thanks alot for your help, I will look through this tonight.

notmrjohn 10-27-2012 03:44 PM

I'm confused, that's my normal state, but are you going to have an open valley or a shingled valley? Are you using shakes or shingles?
If this is your first time, an open metal valley is probably easier. A W valley would be best, it has an inverted V in center, not only does that alleviate water running across valley and under shingles, it helps you center it in valley. Here's a pic and some more instructions on installing. Note that shakes and shingles need different widths of valley and under flashing.
http://www.cedarbureau.org/installation-and-maintenance/roof-manual/page-10.asp


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