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Kiko Denzer on Art

[Cob] double pane windows

Damon Howell dhowell at
Tue Aug 12 12:20:06 CDT 2008

	Thanks for the response. When you say "foam," do you mean styrofoam?  
I have oodles of that stuff which I plan on using in the roof. It  
came from a furniture store. I suppose if I cut a slit in the foam  
then placed it around the edges of the glass, that would cushion the  
pressure from the drying cob? It would also provide insulation where  
there is usually a heat loss.

Damon in GA

On Aug 11, 2008, at 9:34 PM, Henry Raduazo wrote:

> Damon: Are you going to imbed the double pane in mud as you build?  
> I tried that, and I knew that the mud would shrink as it dried so I  
> put a double layer of foam plastic around the edge of the pane. It  
> broke anyway. I should have put a layer of foam on the front or  
> back surface of the glass too and then cut out the foam after the  
> mud dried.
> 	It is tricky. Even single panes of glass will often break as the  
> mud dries. If you look in the center portion of the sculpted house  
> book you will see a window where we pre-broke the panes and  
> provided mud mullions to look like the branch of a tree passing  
> through the glass. There was one additional and unintended break  
> despite the fact that we built so that only a 1/4 inch bead of cob  
> was engaging the edge of the pane.
> 	I would go for it, but pad the double glass well with a sheet of  
> open cell foam on the front and close cell foam on the edges..
> Ed
> On Aug 11, 2008, at 3:26 PM, Damon Howell wrote:
>> Hi folks,
>> 	Could anyone tell me if it is safe to double pane my windows? I
>> would like to, but if it's going to cause trouble in the long run,
>> I'll just stick with single pane.
>> Damon in GA
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