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Hi Lars<br>
<br>
I remember asking this question a good while back and, if I remember
rightly, it was Graeme North who suggested hemp rope. He recommended
purposely over-sizing the gap (i.e. leave closer to 10 or 12mm,
rather than only have 2 or 3mm) around the windows so that it would
be possible to stuff the rope in there (and of course, the rope
would have a bigger diameter than the designed gap).<br>
<br>
I think it is a really elegant solution and don't see why it
wouldn't work. I tried specifying it for a job recently, but having
fought hard to get the mainstream contractor to cope with hempcrete
and clay plaster, I had to let some other stuff go .... the window
sealant being one of them.<br>
<br>
We have a self-build house (cob and timber-frame/straw bale hybrid)
about to start on site with a very environmentally-conscious client,
so I am hopeful that we might be able to try it out on this project.
I am providing architectural services only, not carrying out the
physical work. However, as he is a true self-builder ... building
the house in his own time while juggling work, family, etc., and he
does not intend putting himself under any time pressure, it may be a
few years before I can report back!<br>
<br>
Regards from sunny Ireland .... experiencing our hottest summer
since 1976!<br>
<div class="moz-signature">
<p><b>Féile Butler</b><br>
B.Arch MRIAI Conservation Grade III<br>
Executive Board Member of Earth Building UK and Ireland (EBUKI)
</p>
<p><b>Mud and Wood / Roots Architecture</b><br>
Grange Beg, Skreen, Co. Sligo
</p>
<b>T:</b> +353 (0) 71 930 0488<br>
<b>M:</b> +353 (0) 86 806 8382<br>
<b>E:</b> <a class="moz-txt-link-abbreviated" href="mailto:feile@mudandwood.com">feile@mudandwood.com</a><br>
<b>W:</b> <a class="moz-txt-link-abbreviated" href="http://www.mudandwood.com">www.mudandwood.com</a><br>
<br>
</div>
<div class="moz-cite-prefix">On 28/06/2018 05:30, Lars Keller wrote:<br>
</div>
<blockquote type="cite"
cite="mid:CAKaOCAc-EaRdtbePqSV_1_+Sf1ichoniyRTy+1Kz0+0A9HO2dg@mail.gmail.com">
<div>
<div dir="auto">
<div dir="auto">
<div dir="auto">Hi Derek,</div>
</div>
<div dir="auto">Yes, it is based on the heated floor area.
Tested at 50 pascal over- and underpressure, and then an
average hereof.</div>
<div dir="auto">The test conditions are defined by <span
style="color:rgb(103,103,103);font-family:opensans;font-size:13.008000373840332px;text-align:justify;background-color:rgb(255,255,255)">EN
13829 Thermal performance of building - Determination of
air permeability of buildings - Fan pressurization method
(ISO 9972:1996, modified) - This standard is intended for
the measurement of the air permeability of buildings or
parts of buildings in the field. It specifies the use of
mechanical pressurization or depressurization of a
building or part of a building. It describes the
measurement of the resulting air flow rates over a range
of indoor-outdoor static pressure differences. This
standard is intended for the measurement of the air
leakage of building envelopes of single-zone buildings.</span></div>
<div dir="auto">
<div class="gmail_quote" style="width:1080px">
<div dir="ltr"><br>
</div>
<div dir="ltr">Yes, it is exactly the areas you mention
that most often cause the leaks here in Denmark as well.</div>
<div dir="ltr">What I mentioned was the traditional method
to seal the joint between a wooden frame window and a
brick wall in Denmark before modern big scale building
systems arose from around maybe the 1950ies.</div>
<div dir="ltr">As far as I understand, the big building
segments proved to have expansion rates which the
traditional mortar method could not deal with, and thus
“plastic” sealants where developed.</div>
<div dir="ltr">And what is happening today is what we know
so well: due to speed, lack of knowledge, advertising
etc the “modern” sealing method has taken over.</div>
<div dir="ltr"><br>
</div>
<div dir="ltr">What I am wondering is, if anyone know of
modern sustainable products for sealing the joint
between the window and the wall, be that wood or brick
or straw...</div>
<div dir="ltr">Best, Lars</div>
</div>
</div>
</div>
</div>
-- <br>
<div dir="ltr" class="gmail_signature"
data-smartmail="gmail_signature">-- <br>
Small Planet<br>
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Kontakt-info<br>
skype<br>
jomorandin<br>
lars.friland<br>
<a href="mailto:jomorandin@gmail.com" moz-do-not-send="true">jomorandin@gmail.com</a><br>
<a href="mailto:larskeller@gmail.com" moz-do-not-send="true">larskeller@gmail.com</a><br>
<br>
Home +45 8668 0505<br>
Jo +45 2390 0924 (mobile/handy)<br>
Lars +45 2024 0505 (mobile/handy)<br>
<br>
Jo Morandin, Jamilla, Asger & Lars Keller<br>
Friland 12 B<br>
8410 Rønde<br>
Danmark<br>
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