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Old 01-27-2011, 02:21 PM   #1
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which thickness OSB for a shed


i posted 7/16 OSB on the walls of my 11x9 shed, now i am ready to make the roof. was wondering if i should use the same OSB or some other thickness?

thanks


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Old 01-27-2011, 04:13 PM   #2
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which thickness OSB for a shed


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i posted 7/16 OSB on the walls of my 11x9 shed, now i am ready to make the roof. was wondering if i should use the same OSB or some other thickness?

thanks
I 'm not a real fan of a material that's reverts back to little pieces of wood when it gets wet, so I'd opt for a different material.
What are you covering this with?
Ron

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Old 01-27-2011, 05:18 PM   #3
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which thickness OSB for a shed


http://publicecodes.citation.com/ico...9_8_sec003.htm

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Old 01-28-2011, 12:02 AM   #4
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which thickness OSB for a shed


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What are you covering this with?
housewrap and then cedar siding for the walls, roof haven't decided yet probably just regular shingle roof, i guess...

thanks
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Old 01-28-2011, 07:26 AM   #5
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which thickness OSB for a shed


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Originally Posted by amakarevic View Post
i posted 7/16 OSB on the walls of my 11x9 shed, now i am ready to make the roof. was wondering if i should use the same OSB or some other thickness?

thanks
7/16 OSB really isn't adequate for your roof, even if you're running rafters on 16" centers. You might get by with 7/16 plywood, but even that would be iffy.

I put 5/8 OSB on the roof of the 8x12 shed I built this summer (16" centered rafters). It worked fine. It's a shed. And hey, it was on sale.
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Old 01-28-2011, 08:06 AM   #6
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which thickness OSB for a shed


OSB is fine all the way around. Good enough for houses, good enough for a shed. The OSB thickness will be based on the rafter spacing. 7/16 will be fine for 16" on center, and 5/8 for 24" on center rafters.


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Old 01-28-2011, 08:41 AM   #7
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which thickness OSB for a shed


^ True.

I guess I'd say that there is "minimum code" and then there is acceptable. I know that in some cases, 3/8 OSB is code, provided you have clips. I just don't get that at all...

Also, here in the upper Midwest, we tend to build heavier because of snow loads.


But, as you mentioned, it's a shed.
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Old 01-28-2011, 09:23 PM   #8
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which thickness OSB for a shed


When you say "shed" I think of a 8' X 12' building to store your lawnmower and rake and it does not require a building permit or need to meet any building code. If this is the case then 7/16 should do fine, with 3/8 you might get a bit of an uneven appearance, but it is a shed. If by a "shed" you mean a 16' X 24' accessory storage building that requires a building permit and needs to meet code then use 1/2" rated sheathing, that can be 15/32" plywood or OSB, just make sure it is considered "rated sheathing". If it requires a building permit you should make sure you build it to code whether or not you are getting a building permit as sooner or later (as when you sell your home) you will need to get a building permit and certificate.

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