Re: GBlist: Concrete UNDER Plastic

["Mike Rogers" <mprogers@together.net>]

Yes, that's the idea, but without the sand.  I don't like the sand because
when it gets wet (and it will eventually get wet), if it's on top of the
vapor retarder, it has to dry INTO the building.

I guess my original question wasn't clear enough.  The builder is balking
because the old concrete will be under the poly.  He's concerned about the
old concrete being wet.  I'm not, because the old concrete will be isolated
from the new slab...by the poly!   Can anyone come up with reasons not to
put poly on TOP of the OLD concrete?

Thanks,
Mike

----- Original Message -----
From: Darrin Thornton <epsform@cdsnet.net>
To: Mike Rogers <mprogers@together.net>
Sent: Saturday, December 16, 2000 1:14 AM
Subject: Re: GBlist: Concrete UNDER Plastic


> I would use a 6 mil Black visqueen. Standard install, over lap the edges
and
> about 2 inches of sand to pour on. With the rebar # 3 or #4 bar on 18" or
2 foot
> centers.  Four or 6 inch slab? depends on its use.  This will keep the
moisture
> from migrating from sub grade into the warmer and drier climate of the
inside of
> the building.  At least that's what it say's on page 132 paragraph
three...(ha
> ha ha)
> Darrin (concrete by trade)


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