[Cob] cob/insulation

[Bryan]

Does anyone know how to make a cob house with sandy soil in fl heat vs your
cool climates and clay soils?
Check out my site-> www.BryanTree.com
Bryan Hilbert
2526 54th St S
Gulfport, FL  33707
727-323-7268 office
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Buddha: Consider others as yourself. ...


On Mon, Apr 20, 2009 at 7:06 PM, Robert Alcock <ralcock at euskalnet.net>wrote:

> Hi Bob,
>
> In a climate as cold as Wisconsin, it sounds like you would want more
> insulation than could be provided by a wall consisting of woodchip in
> clay or lime matrix. Though I don't have specific figures, my feeling is
> that the matrix will provide plenty of continuous thermal bridging.
> Loose woodchip in a cavity wall sounds like a better option. Or since it
> sounds as if you've got a plentiful supply of other types of wood, you
> could go for cobwood (using woodchip as cavity insulation in between the
> inner and outer layers of cob).
>
> If you did cobwood or else a strawbale structure plastered thickly with
> cob (like we are doing, in a far milder climate!), you could throw out
> the timber frame and avoid building a redundant loadbearing structure.
> (Sounds like you've made that decision already, though.)
>
> Robert
>
> www.abrazohouse.org
>
> >
> > ------------------------------
> >
> > Message: 5
> > Date: Mon, 20 Apr 2009 00:44:01 -0500
> > From: "Bob Smolen" <boka at mwt.net>
> > Subject: [Cob] cob/insulation
> > To: <coblist at deatech.com>
> > Message-ID: <1DCC74DBD8724916828C21B46A84C891 at SmolenPC>
> > Content-Type: text/plain;     charset="iso-8859-1"
> >
> > Because of the cold climate in Wi. , I am considering  a sandwhich of cob
> with woodchips in the middle. This will be an infill for a timberframe
> structure. What is the best way to build ? I assume boards or plywood could
> be used to support a 4 to 6in cob wall between the timbers and then the
> forms could be stripped and used to support an exterior cob walll say 6 to 8
> inches away from the first wall after which wood chips would be placed into
> the space between. Alternatively, after the first wall is built,the forms
> could be used as an outer support as a temporary wall and the woodchips
> poured between the cob and the form. After the woodchips (coated in light
> clay) dry and firm up, the outer cob wall could be built against the chips.
> > Does anyone have any experience with this method?
> > I guess cob is not necessary as a chip wall could be made between forms
> and then coated with a clay lime plaster because the wall is not load
> bearing and no need for cob. I have had problems getting the chips to firm
> up enough to be a basis for a wall. Has anyone worked with wood chips? A
> friend is a logger so I have access to unlimited amounts. I have a skidsteer
> and can produce a lot of cob working alone. That is why I am considering
> cob.
> > Thanks,
> > Bob
> >
> >
>
>
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