[GSBN] use of ashes in clay plasters and/or floors

[Lorenzo Robles]

Hello everybody:

 

In reality, ashes are not of much help when mixed with clay (it is a sort of lime  in fact), as far as isolation is the concern. It becomes a very good -and unexpensive - isolating material, when poured dry between two surfaces. Like if you build a brick, or adobe, double wall, and leave a gap of two inches  between each wall. Filling that gap with  ashes, gives very good results; I did this in Morocco to insulate a furnace, and it did work really good.  The unpleasant part is the filling in, better wear masks, and leave no crack or holes if you dont want the ashes to leak into the house.

Cheers

Lorenzo

 
> From: absteen at dakotacom.net
> To: GSBN at greenbuilder.com
> Date: Thu, 5 Feb 2009 12:22:13 -0700
> Subject: Re: [GSBN] use of ashes in clay plasters and/or floors
> 
> Rikki,
> Years back, when I was essentially trying out every conceivable method 
> about improving earth plasters via suggestions from books, folklore, 
> heresay, basically whatever I could get my hands on, I tried using ash 
> in a variety of methods. It's been too long to remember exactly what 
> I did, but the short of it is, I came to the conclusion that I 
> couldn't notice anything worth pursuing further.
> 
> Bill
> On Feb 4, 2009, at 6:14 AM, Rikki Nitzkin wrote:
> 
> > Hi all in a debate on the Spanish list serve, talking about 
> > "insulating" clay floors, the following observation was made:
> >
> > "Otra pregunta: no sé si en la capa de aislamiento se podría añadir 
> > además ceniza?. Sé que la ceniza se utiliza como muy buen aislante 
> > en hornos de barro tanto en la solera del horno como mezclada con el 
> > barro (yo mismo la he empleado). Sería una posibilidad de reutilizar 
> > un residuo sobretodo la gente que produce cantidades importantes 
> > (chimeneas, cocinas económicas, estufas...)."
> >
> > "one more question: I don't know if in the insulation layer (of the 
> > clay floor) it would be possible to add ashes? I know that ashes are 
> > frequently used as good insulation in clay ovens-both in the floor 
> > of the oven and in the clay. Would it be possible to re-use a 
> > residue (ashes) that many people produce in important cuantities?
> >
> > note: here in spain a lot of people still use wood-burning stoves 
> > and ovens, as well as fire-places...
> >
> > Any thoughts or comments?
> >
> > Rikki
> > _______________________________________________
> > GSBN mailing list
> > GSBN at greenbuilder.com
> > http://greenbuilder.com/mailman/listinfo/GSBN
> 
> Athena & Bill Steen
> The Canelo Project
> HC1 Box 324
> Canelo/Elgin, AZ 85611
> absteen at dakotacom.net
> www.caneloproject.com
> 
> 
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