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Greenbuilding Archive for January 2002
564 messages, last added Tue Nov 26 17:26:27 2002

[Date Index][Thread Index]

RE: [GBlist] Wall permeability



Title: Wall permeability

Kirsten:

 

I admire your dedication to practice green interior design.  I made the decision to practice green architecture several years ago and, in light of some of the difficulties, renew that decision periodically.  This list helps remind me of all the reasons.  There are some upcoming seminars on the business aspects of managing and marketing green businesses as well as many other relevant seminars at the forthcoming Environ6 Conference in Seattle, WA April 3-7.  Perhaps you should attend.

 

I have read a little about baubiology. I am not familiar with their position on vapor barriers. For a resource you could check out the International Institute for Bau-biologie & Ecology (IBE) web site at: http://www.bau-biologieusa.com/  

 

You can find other Internet resources by checking www.google.com and typing in “baubiology”.

 

Cheers,

Ralph Bicknese

 

-----Original Message-----
From: Kirsten Flynn [mailto:kir@declan.com]
Sent: Wednesday, January 16, 2002 11:30 AM
To: greenbuilding@crest.org
Subject: [GBlist] Wall permeability

 

Dear listers,
I have been lurking and occasionally commenting on the more general topics for a while now.  My goal has been to learn from the impressive expertise on this list.  I had a question about a building issue that I have not seen addressed on this list.  

First, I will briefly introduce myself.  I am an Interior designer just starting my business and planning to do exclusively green work.  This is a second career for me, and it is time to follow my values, and do something that makes a difference, albeit small.  I am extremely interested in building construction and how to affect the energy use of the finished building.

I would very much like to know your thoughts on wall permeability to vapor.  I have been hearing that there is a movement in Europe, (called Baubiology?) which puts forward the idea that the building envelope should be permeable to gasses.  This idea seems to be popular with some of the IAQ folks, because out gassing does not remain inside the building to combine with other outgasses, and/or be redeposited on indoor surfaces.  However, here the conventional wisdom seems to be the tighter the better, (and I am not talking about the jeans on your carpenters.)  I can also see the logic of this, as it seems like it would be the most energy efficient.  I also am curious about the path of water vapor is such a house, and how one would be sure that the dew point did create enough moisture inside a wall that it might be damaged.

I realize that this is a shades-of -grey world, and there is probably merit in both points of view.  Perhaps they are not mutually exclusive, in some way I do not see.  I look forward to reading your responses.  Feel free to refer me to reference material, rather than answering my questions directly.  I realize they are rather broad.

Thank You
Kirsten.