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RH in Concrete for Wood Floor with Vapor Membrane

#26
You can do a floating subfloor
1 st layer, 3/8" exposure 1 plywood, is not fastened to concrete 1/8" gaping between panels.
2nd layer, 3/8" exposure 1 plywood, is laid perpendicular to first without no edges touching between them.
You then staple the 2nd layer to the 1st layer and proceed to nail to the 3/4" thickness required for nail down installation.
Thus you do not penetrate the vapor retarder.
This is approved by the NWFA and all mfg's in their instructions.
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RE: RH in Concrete for Wood Floor with Vapor Membrane - jim decker - 03-22-2013, 01:36 PM

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