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Old 03-01-2011, 07:35 PM   #1
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Installing plywood over OSB


I have 3/4" OSB down now that is running with the long edge perpendicular to the floor joists. I am going to put down 3/4" T&G plywood over it.

Do you guys think I should put the plywood down perpendicular to the OSB or the same direction to the OSB and just make sure the joints don't line up ?

Georgia pacific says to put the plywood down with the long edge perpendicular to the joists but that is when there is only one layer they don't say what to do when there are two layers.

I have read when there are two layers to have them perpendicular so what do you guys think ?

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Old 03-01-2011, 09:47 PM   #2
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Installing plywood over OSB


If going for strength, yes; http://www.apawood.org/pablog/index....-Floor-Systems

Gary

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Old 03-01-2011, 10:03 PM   #3
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Installing plywood over OSB


So I should put it down long edge perpendicular to the joists then right ?
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Old 03-01-2011, 10:17 PM   #4
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Installing plywood over OSB


Quote:
Originally Posted by msaeger View Post
So I should put it down long edge perpendicular to the joists then right ?
Thats correct
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Old 03-01-2011, 10:20 PM   #5
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Installing plywood over OSB


Thanks !
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