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[Strawbale] Fwd: Repair work on danish strawbale house




...from the GSBN List, my thought being that there should be some Danes on this Euro SB List who are more familiar with Denmark-specific SB issues than those of us here in the Colonies.


------- Forwarded message -------

Date: Mon, 3 Oct 2011 15:39:33 -0700
From: Bruce King <bruce@ecobuildnetwork...>

Michael Joergensen in Denmark sent me the note below, which has a
number of questions.  I'm pretty buried right now, so ask if anyone
(Lars?) wants to chime in and help Michael with his problems.

Please use "reply all", as both Michael and most of GSBN will want to
see your answers.

Michael:  GSBN is an invitation-only global email list of straw bale
"elders".  Everyone on this list (and now hopefully reading your note)
is both pretty modest and very knowledgeable.  You won't find a better
straw bale resource.  Good luck!

Thanks,

Bruce King, PE
Director of EBNet
Ecological Building Network
the art and science of building well
bruce@ecobuildnetwork...
PO Box 6397
San Rafael, CA 94903 USA
(415) 987-7271
follow us on Twitter: @EBNetwork
blog:  http://bruceking.posterous.com/

On Oct 2, 2011, at 2:59 PM, Michael M. J?rgensen wrote:

Hi Bruce,

According to EBNet website, I should contact you if I have a topic,
I would like to discuss on the Build Well Forum.

Well, I do.

My wife and I build a strawbale house in Lyngby, close to Copenhagen
in Denmark in 2001. At the time we didn?t think a lot about it, just
rushed right out into it?as one should, when you are young and ready
to learn new stuff  :o) You can see a few pics of the building times
and the house.

Today, 2011, after having experienced a major rainfall on 2nd July,
the largest in Denmark in more than 100 years, which flooded our
fine house, we are probably less openminded and more focused on
finding the right way instead of the right experiment. Not that we
have made some bad choices, not at all, but this time we need to
make sure not to.

We have a great insurance company which takes good care of us, so we
are fine. Things take time, but that is ok, as long as they happen.

I have some specific questions for the bale-experts, which I haven?t
found answers for anywhere:

Do we have to use welded chicken net/wire ? we did the last time,
but we have also heard of a method of using straw mats, example: http://www.hiss-reet.de/produkte/naturbaustoffe/unterputzgewebe.html
My thoughts are that the bales and the mats are the same material,
and using the mats to close the gaps over wooden joints etc. ought
to ensure a wall that does not work in different ways.

Will this ensure a rendered wall without cracks and tears or should
we stay with the chicken nets?

If we end up using the chicken nets ? should we then cover all bale
surfaces with the nets? Or only the wooden joint parts?

We intend to build the new walls in bales, but start with a not-
water-absorbing material for the first 50-60 cm from the base ? no
reason to invite disaster a second time. Should the joint of the two
materials be separated by a water repellent material like to avoid
ascending moisture or will that force any moisture in the bottom
strawbale to stay there thus causing problems in the bottom
strawbale. The direct reason for this question lies in the
construction of the last wall, which was mounted on a wooden bench
of 2 by 4 inch beams parallel to the house deck and elevated about
30 cm above ground and actually fully ventilated from below given
the bench construction (should have been a bit further up, as we
realize now, but no one knew at the time). That construction ensured
that no water could accumulate in the bottom strawbale. It there any
technical advice on this?

In your experience will bigbales have a relatively better insulation
effect than the small traditional ones. My thoughts are that they
are very heavily tightened and there the free floating air inside is
less than in the small bales (relatively). Am I wrong? What do you
recommend and what do you use yourself?

That is all for now.

Hope you will let me bring my story, picas and questions ? or just
the questions :o)

All the best from Denmark
Cheers
Michael

Michael M. Joergensen
Om Kaeret 4A
DK- 2800 Lyngby
http://g.co/maps/ff6pp


<fotos fra om k?ret byggeproces.pdf><om k?ret inde 032005
006.jpg><om k?ret inde 032005 007.jpg><IMG_0263.JPG>

---- End of forwarded material ---


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Rob Tom
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