04-05-2008, 06:05 AM
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Deity
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Join Date: Jul 2004
Location: Saint Regis Falls, NY, USA.
Posts: 3,669
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the OSB would be fine as long as moisture doesn't get to it. the glues used in its manufacture are basically latex based and they use pressure to form the sheets. Once moisture gets to it, it expands and gets crumbly.Quite possible if you coat both sides with an oil based paint first it'll be ok. maybe even lay some poly over the joists before laying down the OSB. leave some space [1/8th inch] to allow for expansion even if you are using tongue n groove.
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