[Greenbuilding] Safecrete & Mass walls

[Tom St. Louis]

Oregon and Washington State energy code do not recognize or allow the 
dynamic thermal performance of exterior envelope insulating materials.

Steady-State tests from accredited testing organizations is the law. Other 
Northern State jurisdictions may have the same rules/laws.

In predominantly heating climates you need an external heat source (the sun) 
during the heating season to make thermal mass in an exterior wall work for 
you and to get credit. Using your internal heat sources, no mater what kind 
of fuel, does not count for heating your thermal mass, you are still using 
fuel. Internal mass is good and helps even out thermal swings, when the sun 
isn't shining you still have to use fuel to heat the internal mass/heat 
sink.

Exterior thermal mass walls work great where the sun shines lots in winter 
or where its hot in the summer. Up here in the Northwest it gray most of the 
time in winter.

Check the Federal Trade Commission rules as well on thermal performance 
claims.


----- Original Message ----- 
From: "Jeannie" <jeannie at babb.com>
To: "'Kat'" <molasses at speakeasy.net>; "'Greenbuilding'" 
<GREENBUILDING at LISTSERV.REPP.ORG>
Sent: Thursday, July 27, 2006 1:02 PM
Subject: Re: [Greenbuilding] Safecrete


> Someone is misinformed.  Call that number I gave you.  He can help.
>
>
> Jeannie Babb Taylor
> www.SafeCrete.com
> 706-965-4587
>
> -----Original Message-----
> From: Kat [mailto:molasses at speakeasy.net]
> Sent: Thursday, July 27, 2006 3:59 PM
> To: Jeannie; Greenbuilding
> Subject: Re: [Greenbuilding] Safecrete
>
> Todd (the architect I work for), says "The city's issue is supposedly both
> reinforcing and long term weathering."
>
> We're in a D1 earthquake zone (I think that's what the code labels it as
> these days) here, so that's probably where the
> reinforcing issue comes from.
>
> -Kathleen
>
> ----- 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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