[Strawbale] Fwd: Futility of quantifying properties of natural materials (was Re: compressing or not

[Max Vittrup Jensen]

Hi again,

Ok, so not 'unplastered', but 'slightly plastered' (Sounds like me after a
night at the pub!)

I'm aware about approx. 5 national fire tests, but due to the cost and the
aim they are all done with between 3-5 cm earthen plaster.
The only firetest I'm aware off which actually confirms that a clayslip is
sufficient is the one carried out at the final evening of the excellent
ESBG07 in Germany. -I just noticed that my hopelessly amateurish filming of
it has received 12.986 on youtube!
I don't know if links work in this forum, if not then search for 'Strawbale
fire test'
https://www.youtube.com/watch?v=fVrJmigIybA

...But I'm afraid it's not going to convince the authorities...

Cheers, Max


On Wed, Mar 19, 2014 at 7:34 PM, Dave Howorth <dave at howorth.org.uk> wrote:

> On Tue, 2014-03-18 at 18:17 -0700, Menno Houtstra wrote:
> [snip]
> > although i must say that in the cases that i described it is about a
> > compressed strawbale wall inside a concrete building.
> [snip]
>
> That statement rings alarm bells for me with regard to possible
> condensation problems and consequent rot. Whether there could be
> problems depends on a lot of factors, but if you're in a northern
> European climate and the bales are up against concrete external walls,
> there may well be a problem.
>
> You might also want to read up about the chimney effect if unplastered
> bales are stacked alongside some other structure.
>
> You may well have already considered these possibilities but I thought
> it safest to point them out.
>
> Cheers, Dave
>
>
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