Big Green: Cotton Insulation for a Hospital

Sun Aug 10 22:15:21 EDT 2008

Michelle,

Be careful when using a fibrous, permeable insulation for an environment 
such as a hospital that is likely to have elevated humidity in winter if 
your project is in a northern climate. With vapor permeable insulation 
in the stud cavity I recommend that hygrothermal analysis be performed 
to ascertain that the dew point will not fall within the insulation or 
inside of the sheathing.
--


Richard

 
*R I C H A R D     K E L E H E R     A R C H I T E C T**
*AIA  CSI  LEED AP

460 Powder Mill Road, Concord, MA  01742       www.rkeleher.com
978-944-2734                                                
     kel at rkeleher.com
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>    1. RE: cotton (Halle Stern, Michelle)
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> ----------------------------------------------------------------------
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> Message: 1
> Date: Wed, 6 Aug 2008 11:14:11 -0500
> From: "Halle Stern, Michelle" <Michelle.Hallestern at perkinswill.com>
> Subject: Big Green: RE: cotton
> To: "Foltz, Stuart D ERDC-CERL-IL" <Stuart.D.Foltz at usace.army.mil>,
> 	"biggreen at lists.biggreen.org" <biggreen at lists.biggreen.org>
> Message-ID:
> 	<8C84B13ABE9CA74DA9C424284F5FDDD501F3EBDE8C at chi01exmb.perkinswill.net>
> Content-Type: text/plain; charset="us-ascii"
>
> I agree about agriculture. It was chosen for recycled-content and superior (at least as advertised) sound attenuateion. Fiberglass has been projected as the next asbestos for respiratory illness.
>
>
> Michelle
>
>
>
> ________________________________
> From: Foltz, Stuart D ERDC-CERL-IL [mailto:Stuart.D.Foltz at usace.army.mil]
> Sent: Wednesday, August 06, 2008 11:10 AM
> To: biggreen at lists.biggreen.org
> Cc: Halle Stern, Michelle; ggoldblum at hedev.com; csandler at cox.net
> Subject: cotton
>
>
> How was it determined that cotton is more sustainable than fiberglass or other alternatives?
>
> Agriculture isn't exactly low impact and I thought cotton was rather bad for depleting the soil too.
>
>
> Stuart Foltz
> ERDC-CERL-CFM
> Champaign, IL
> "They that can give up essential liberty to obtain a little temporary safety deserve neither liberty nor safety." - Ben Franklin, 1759
>
> Date: Fri, 1 Aug 2008 14:58:20 -0500
> From: "Halle Stern, Michelle" <Michelle.Hallestern at perkinswill.com>
> Subject: RE: Big Green: Cotton insulation
> To: "Goldblum, Gary" <ggoldblum at hedev.com>,
>         "biggreen at lists.biggreen.org"   <biggreen at lists.biggreen.org>
> Message-ID:
>         <8C84B13ABE9CA74DA9C424284F5FDDD501F3E075EE at chi01exmb.perkinswill.net>
> Content-Type: text/plain; charset="us-ascii"
>
> I'm looking for information independent of the manufacturer, including any personal experience people have with performance.
>
>
> Michelle
>
> -----Original Message-----
> From: Goldblum, Gary [mailto:ggoldblum at hedev.com]
> Sent: Friday, August 01, 2008 2:50 PM
> To: Halle Stern, Michelle; biggreen at lists.biggreen.org
> Subject: RE: Big Green: Cotton insulation
>
> See link below for info
> http://www.bondedlogic.com/ultratouch.htm
>
>
>
> Gary Goldblum, AIA, LEEDR AP  |  Associate  |  Architecture  |  Direct: 213.542.4538 ggoldblum at hedev.com
>
> Harley Ellis Devereaux
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> -----Original Message-----
>
> From: biggreen-bounces at lists.biggreen.org
> [mailto:biggreen-bounces at lists.biggreen.org] On Behalf Of Halle Stern, Michelle
> Sent: Friday, August 01, 2008 12:22 PM
> To: biggreen at lists.biggreen.org
> Subject: Big Green: Cotton insulation
>
> Is cotton insulation a viable choice to replace fiberglass on a large hospital? I'm hearing that the r-value and STC are unconfirmed, that there are performance issues, and that the fire retardants may be toxic.
>
> Michelle
>
> Michelle Halle Stern, AIA, P.E., M.S., LEED(r) Faculty 330 N. Wabash Ave., Suite 3600, Chicago, IL 60611
> t: 312.755.4596 f: 312.755.0775 e: michelle.hallestern at perkinswill.com
> www.perkinswill.com<http://www.perkinswill.com/><file://www.perkinswill.com<http://www.perkinswill.com/>>
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