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Unread 11-09-2018, 01:11 AM   #4
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Join Date: Nov 2006
Location: NW Arkansas, Ozark Mountains
Posts: 11,136
If your joists are 16" on center, you could certainly install over a single layer of 3/4" plywood. Just make sure it's tongue and groove, installed with the face grain perpendicular to the joists, and has a face grade of A, B, or C.

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