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Old 06-10-2012, 04:26 PM   #1
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Shingling over cedar shakes


I live in Canada and have very old cedar shakes that are still in good condition. I have just removed 2 layers of ashpalt off of them and am wondering if I can sheath over the shakes and then install the new architecural shingles. And I will be putting a layer of weather protection and ice and water shields on as well. Can I do this and what are the ramifications of doing it.
Thank you to everyone who can help me out with this

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Old 06-10-2012, 08:10 PM   #2
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Shingling over cedar shakes


I’m not sure why you’d think The Cedar is in good condition other than the fact that removing the two layers of asphalt on top of it was easy and stripping the layer of Cedar is more like work.

To answer your question…NO, do not sheath over the Cedar, tear it off and start clean.

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Old 06-10-2012, 08:25 PM   #3
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Shingling over cedar shakes


Not recommended, #2: http://publicecodes.citation.com/ico...007_par002.htm

Check with your local AHJ.

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Old 06-11-2012, 12:33 AM   #4
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Shingling over cedar shakes


yeah dont sheath over the shakes. tear them off and fresh.
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Old 06-11-2012, 07:23 AM   #5
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Shingling over cedar shakes


+4

Always start with a clean base.
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Old 06-14-2012, 10:21 PM   #6
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Shingling over cedar shakes


real bad idea. if there shakes and not cedar shingles then it wont be that bad to take them off. really if there cedar shingles you could plywood over them. i honestly cant think what it would hurt. i know tearing off old cedar shingles is a real nightmare but when its done its done.
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Old 06-14-2012, 11:26 PM   #7
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Shingling over cedar shakes


You need to fire-stop any wood shingles before sheathing over it: http://publicecodes.citation.com/ico...007_par003.htm

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Old 06-15-2012, 12:13 AM   #8
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Shingling over cedar shakes


there you go. seems you can as long as you follow safety. bite the bullet and tear it off. youll only have to do it once.

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