[Greenbuilding] Safecrete

[Jeannie]

Static R-value of AAC is under 1.2 per inch, which isn't so great.
Performance is much better because of the thermal mass.  Effective R-value
varies by location. 

In the Southeast and up the East coast, we build with 8-inch exterior walls
and no added insulation.  Homeowners save up to 50% on heating and cooling
costs.  In the extreme north, we sometimes see thicker walls (10" or 12").
Out west people use thicker walls because they like that adobe look.
SafeCrete thermal mass adjusted r-value is actually higher in the deserts of
Arizona than here, because of the wide temperature swing.  But then again,
they need more insulation!

Please see this page, including the Oak Ridge National Laboratory study
links at bottom.

http://www.safecrete.com/aac/benefits/energyeff.cfm



Jeannie Babb Taylor
www.SafeCrete.com
706-965-4587

-----Original Message-----
From: Rushd45 [mailto:RushD45 at ironandwood.org] 
Sent: Thursday, July 27, 2006 1:33 PM
To: Jeannie; 'Greenbuilding'
Subject: Re: [Greenbuilding] Safecrete

Jeanie, 

Could you please give us the "actual" vs. "effective" R-value of SafeCrete?

Thanks

Rush
Tucson AZ
www.ironandwood.org


----- Original Message ----- 
From: "Jeannie" <jeannie at babb.com>
To: "'Greenbuilding'" <GREENBUILDING at LISTSERV.REPP.ORG>
Sent: Thursday, July 27, 2006 7:37 AM
Subject: Re: [Greenbuilding] Safecrete


> Autoclaved aerated concrete products (by SafeCrete and other names) are
used
> in Oregon pretty frequently.  There was a scuffle with some building
> departments a while back over the "actual" vs. "effective" R-value.  My
> understanding is that the installers worked with the building departments
to
> resolve the issues.
> 
> Kathleen, I sent you a private email with some local contact info.
> 
> Jeannie Babb Taylor
> www.SafeCrete.com
> 706-965-4587
> 
> -----Original Message-----
> From: greenbuilding-bounces at listserv.repp.org
> [mailto:greenbuilding-bounces at listserv.repp.org] On Behalf Of Kat
> Sent: Wednesday, July 26, 2006 7:52 PM
> To: Greenbuilding
> Subject: [Greenbuilding] Safecrete
> 
> Well.  Turns out we and our client would love to use Safecrete on a
project
> - but guess what?  The city of Portland (OR) won't accept it.
> 
> I write this because I know there is a Safecrete person on this list, and
> maybe there's something they know of that can be done about this?
> 
> -Kathleen
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