Plywood vs OSB (Strand Board)

Old 06-11-02, 03:22 AM
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Question Plywood vs OSB (Strand Board)

Would someone please help me out with this little problem....which is stronger, plywood or OSB board? I have some people telling me to use plywood for my roof and floors, and others telling me to use OSB board as it is now stronger than plywood.

Anywhere suggestions?
Old 06-11-02, 04:26 AM
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OSB is cheaper and stronger, UNLESS it gets wet or absorbs too much moisture.
Personally, I would use pressure-treated plywood under potential flood floors (kitchen, bathrooms, laundry room, etc.), regular plywood on other floor areas, and OSB on the roof field only. Most contractors here use plywood on the roof edges.
For discussions by pro contractors (I'm not one) on the subject, just do a search in here for Oriented Strand Board. You will see all of their pros and cons about OSB vs plywood (in particular by Jack The Contractor and lefty).
Good Luck!
Old 06-11-02, 06:09 AM
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Thanks Old Guy,

The lumber yard guy recommended I use 7/16" OSB for my walls, 3/4" T&G OSB for the floor, and 5/8" OSB for my roof.

Thanks again for your quick response.
Old 06-15-02, 06:06 AM
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Your Lumber Yard told you exactly correct. That is what I would have told you. Good Luck

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