[Strawbale] earth emission

Oliver Heizmann Oli.Heizmann at gmx.de
Thu Jun 21 14:13:21 CEST 2012


i also read the artikle in "spiegel-online" and followed the diskussion.
and also i was asked by many people about the matter. so i see the problem, that this story walks the circuit.

they talk about thorum, a doughter-product of thorium. thoron is a radioactive isotop of radon.
for all german speakers here is the link:


For me the question is, if this study is really science-based and proven...
Is it reliable to gather the health risk of earthern plasters from two (!) hous-examples, one in bavaria and one in china?

who paid this study and the jounalists?

Might it be as always? people first smile at the alternatives, then fight them and in the end always had known about it...

Might it be that the little niche "at the periphery of the whole building scene" has reached step 2 in the cognition of some interests?

i´m sceptical because of the lurid style the article is written...
putting all the members of anti-atom-movement into unhealthy earth-houses...

however, in our responsibility we should take all concerns about health risk serious.

best wishes

-------- Original-Nachricht --------
> Datum: Thu, 21 Jun 2012 11:54:47 +0200
> Von: "shaktihaus" <info at shaktihaus.de>
> An: Strawbale at amper.ped.muni.cz
> Betreff: [Strawbale] earth emission

> Dear Sarah,
> >where are you from? It sounds that you have never been to Germany an
> picture it as a country with hobbit houses made of high-level-radiating
> earth. Everybody is freaked out of course. Hello..please back to reality
> and
> serious facts please. 
> >Germany has an infinitisemal small percentage of earthen houses, we
> strawbale and earth builders are all kind of at the periphery of the whole
> building scene. Most houses are made from bricks, 5% of Wood.
> >There are some areas where the earth emits radon, I think this is the
> radiation that you are talking of, which indeed contributes to lung
> cancer.
> It is therefore wise, and every builder should know this, that if certain
> geological circumstances are met (e.g. schist), one should measure radon
> on
> the building site. If there is radon-emission, it can easily be handled by
> simply sealing the foundation. Radon becomes only harmful if it
> accumulates
> in closed spaces.
> Some clay also contains a higher level of radon which can and should be
> measured. If you have high levels of radon in the clay, don`t use it. 
> So your concern is valid, but it is not a widespread problem and not a
> problem of Germany and China exclusively. 
> Just keep it in mind, measure your site and the material and then either
> take measures or don`t use the material.
> Greetings, Tilman from Shaktihaus 
> Original message:
> Hi everybody,
> There is a real concern that radiation from earth in buildings are at
> harmful levels, especially in Germany and china. I would like to hear what
> you know and think of it as I am contacted by nervous clients about the
> matter. I have a hard time finding information on the subject. A German
> article was describing the high levels of radiation as being a big
> contributor to lung cancer which has freaked out the German population as
> it
> has a large amount of earthen houses. It is Thoron that is the suspect.
> If you know about how to stop radiation from walls, like paints or wall
> paper, etc, let me know also.
> Look forward to hearing from you.
> Sara Tommerup

Oliver Heizmann
Dipl-Ing. (FH) Fachbereich 
Architektur & Stadtplanung
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