[Strawbale] Strawbale roof insulation

Harald und Margit Wedig avantgarden at wxs...
Thu Sep 19 18:33:37 CEST 2002

rikki nitzkin wrote:
> Here´s another thought on Borax and wool if you´re going to do
> testing.  The people who have used Borax to protect wool (and wood,
> where it is not exposed to water) here in Spain usually dilute it at a
> proportion of 1kg Borax to 10 liters of hot water and spray it on with
> one of the back-pack style things they use to spray plants with
> chemicalst (I can´t remember what its called in english).  So if you
> decide to test borax maybe it would be interesting to test it both
> ways: dry, or diluted with water. . .  it may cover the wool more
> completely in liquid form.

Hello Rikki,
I found, that diluted borax runs of the oily wool whereas in ity dry
form it sticks to it nicely.
Mark mentoined, that lanolin is being extracted fom the wool to make it
more fireproof.
Yet oily wool makes it much more difficult for oxygen to pass through,
surly if its compressed a fair bit. It will burn, once the rest of house
is burning ( and the lanolin will burn exellent once the heat makes it
liquid) but it is almost impossible to start a fire with this wool.
I tried and found, that it is easier to get a well compressed three
string bale to burn.

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