[Greenbuilding] insulation vs. air sealing

elitalking elitalking at rockbridge.net
Wed Oct 6 09:07:59 CDT 2010


In unoccupied spaces such as attic and crawlspaces, ventilation is for 
moisture control.  In the attic, it is also for heat removal in the summer. 
I agree with the point that if these spaces are sealed tight to not allow 
moisture to enter, they would not need ventilation.  This is a difficult 
standard to achieve.  However, in the case of a crawlspace, if you install a 
dehumidifier to run only when humidity level achieves problem level. The 
sealed crawlspace attempts to block hot humid air entry into space and other 
sources of moisture.  Because it is unoccupied, air quality for breathing is 
not an issue.

Eli
----- Original Message ----- 
From: "Gennaro Brooks-Church" <info at ecobrooklyn.com>
To: <brian at amicusgreen.com>
Cc: <greenbuilding at lists.bioenergylists.org>
Sent: Monday, October 04, 2010 9:35 AM
Subject: Re: [Greenbuilding] insulation vs. air sealing


Ventilation in a well sealed house is not just for humidity. Seeing as
the body releases all sorts of nasty toxins you are also ventilating
for that. For example studies show that CO2 levels get really high in
bedrooms at night.

Gennaro Brooks-Church

Cell: 1 347 244 3016 USA
www.EcoBrooklyn.com
22 2nd St; Brooklyn, NY 11231









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