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Re: Slab on Grade and the Green Code

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Hello Andrew,

What do you specify for a vapor barrier in Florida?
Is it an HDPE 15 mil barrier, or similar?

Also I didn't see any attachment on your post. Is
there a link that you can provide that will allow
us to access this document another way?

Thanks,
Lloyd

On 5 Dec 2013 at 12:38, Andrew Kester wrote:

> I am curious as to where you fall in this discussion with your vast
> experience Mr. Stuart?
> 
> I have read articles that have lead me to believe this is a regional
> practice thing, and perhaps somewhat related to differing climates and
> water table levels?  In essence, the vapor barrier/sand/concrete
> design is a west coast or California detail, while much of the east
> coast is normally slab directly on a vapor barrier? FWIW, in Florida
> the SOG is almost always placed directly on a vapor barrier. But many
> areas of Florida have high water table which can lead to high natural
> moisture content in the near surface soils, as well as dealing with
> very rainy summers and high humidity during construction.
> 
> Also, vapor barriers have come a LONG way. If using a vapor barrier
> directly under the slab, I would strongly recommending on going much
> thicker than 6mil to avoid a lot of the tearing and puncture issues.
> 
> Interesting subject, and thanks for that article Mathew.
> 
> I attached a pretty good article on the subject of slabs and moisture

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