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[Gene GeRue <genegerue AT ruralize.com>]

On Sep 2, 2008, at 9:04 PM, Rob wrote:

> In Minnesota, I had a small shop area out in the woods. I laid
> treated 2x4's flat, 12"oc. Plastic on top of that and then the wood  
> sheeting.
> I did the 'back room' on the garage here about the same. It's on a
> concrete slab (no moisture barrier that I'm aware of). Plastic
> sheeting, then regular 2x4's laid flat 12"oc. Sheet insulation
> between the 2x4's and 3/4 flooring on top of that. It's worked well
> over the last few years.

Thanks, Rob. Two by fours flat will support the plywood but I wonder  
if it might not stay flat. One would not know until after if was down  
for a while and then it would be a job to redo it. So I vacillate on  
that or four by fours.