[Cob] insulation idea

[Carl]

Dear  all,

You should know of course that plastic is an environmental threat and 
most man-made chemical contaminants like plastic intefere with hormones 
in humans and wildlife and are one of the main reasons for using natural 
building materials.  The EU has a goal of reducting is use of plastics 
by the year 2005 by 20%. 

An example the plastic used to make CDs is very bad.  You can send them 
to HP.   
http://www.hp.com/hpinfo/globalcitizenship/gcreport/operations/waste.html

Don't use plastic baby bottles or plastic wrap for food its not safe.

Endocrine disrupting chemicals alter development of the fetus in the 
womb by interfering with the natural hormonal signals directing fetal 
growth. Their impacts, sometimes not detectable until years or decades 
after exposure, include reduced disease resistance, diminished fertility 
and compromised intelligence and behavior.  Mankind has no future if 
hormone disruption  is not addressed.

http://www.ourstolenfuture.org/

http://www.environmentalhealthnews.org/

* New advances 
<http://www.ourstolenfuture.org/NewScience/lowdose/lowdose.htm> *in 
toxicology that challenge basic assumptions about which chemicals are 
safe and what exposures are tolerable.   The new paradigm indicates that 
an entire generation of science used to examine chemicals for safety was 
misguided, ignoring vital impacts at low levels of exposure, and likely 
to have given false assurances of safety.





Amanda Peck wrote:

>
> In most of the U.S., venting the moisture would be a problem if a 
> waterproof surface was lying against the wall.  One of the people 
> building an oven had pictures of his tarp to keep the rain off the cob 
> while it was under construction held up with poles because he was 
> having mold problems.
>
> But a pool cover awning, the winter equivalent of a sunshade, sounds 
> like a perfectly wonderful idea.
> Might be enough warmth held in it so I could be outside drinking my 
> morning coffee instead of inside banging away at the computer on this 
> lovely--if cold--morning.
>
> It also sounds rather like a trombe wall, a wall inside a sunspace of 
> some sort (anything from "the greenhouse" to down around a foot), with 
> vents for air movement to the interior of the building.
>
> There's also something called a solar chimney (well, two things called 
> solar chimneys, this is only one of them) that involves something like 
> a chimney with a glazed sunward side, black inner surface--sometimes 
> corrugated metal--vents towards the inside and outside top and 
> bottom.  Depending on which ones you open you can get heated room air 
> circulating, heated outside air circulating into the room, air being 
> powered out of the room.  With the other kind of solar chimney, the 
> pictures often show a free-standing tower that can produce enough wind 
> through the chimney to run a wind-powered generator.
>
> ................
> Brad Calvert wrote:
>
> I was wondering how a cob or other heavy wall would go with a swimming 
> pool
> blanket over it, the stuff like heavy duty bubble wrap.  The idea is to
> allow the sun's rays to still hit the wall, but to reduce heat loss 
> from the
> wall to the outside.  The cover would also act to protect the wall 
> from the
> weather.
>
> I wonder what the R-value of the plastic cover is?  I believe they help
> pools retain heat primarily by reducing evaporation, so maybe the 
> insulation
> value is not all that good, but it must be better than nothing, it would
> also allow the wall to be more exposed to the sun rather than 
> protected by
> eaves.
>
> I guess this would be very ugly, it is just an idea I'm throwing around.
>
>
>
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