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

[Sebastien Hubert]

Hi everybody,

Completly agree with you Dave,

Clayplaster protects again fire AND is the airtightness of the walls.  
Certainly with inside insulation.  I would say that a clayplaster is 
probably too open (regarding vapor) to act as a good vapor barier in 
this case.  Perhaps lime would be better ?

Cheers

Seb

On 19/03/14 19:34, Dave Howorth 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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