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Here's my plan.. I'm going to lay down 6mil plastic on the dirt, add 4 inches of stone on them, then 4x4 skid on that. On top of the skid will be the floor joists. Between the OSB and the joists will be a layer of Kilz Oil based primer and 6mil plastic.
When I was at Home Depot today, they had a shed on skid there with OSB flooring. The OSB looked to be bare on the bottom, but it was painted gray on top. The gray paint looked like Dry Lok.
So now I figure, if there are shed builders using OSB without anything coating the ground side OSB flooring, I should be fine with the vapor barrier and oil based primer sandwiched between the OSB and joists.
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