[Strawbale] airtight plaster
sebastien.hubert at mc2000.be
Sun Jun 17 23:46:07 CEST 2012
I updated the english file and also add a french version.
I'll try to translate it in dutch as well...
On 15/06/2012 22:41, Sebastien Hubert wrote:
> Hello all,
> Please find below my answer to Dave. But the file is too big.
> You can download it on :
> On 15/06/2012 22:32, Sebastien Hubert wrote:
>> Hello Dave,
>> There is no problem to use plaster as the main barrier.
>> I've put a document describing airtightness of a straw bale house.
>> We did a blowerdoor test before finishing the last plaster layer.
>> Although the last layer was not done yet, the result of the test was
>> very good.
>> The result we get is quite encouraging as we reach the value of 0.93
>> (each hour 0.93 air volume of the house is renewed under a pressure
>> of 50Pa. For a passive house the value should be 0.6 max. Altough
>> we will not be passive we are quite close to it. A new test will be
>> done later as the finish coat is done now.
>> I hope the file is not too big for the list... If it's too big, I'll
>> put it on a web site....
>> I hope this will help you ...
>> On 09/06/2012 15:56, Dave Howorth wrote:
>>> I'm planning to build a loadbearing bale house next year. I'm currently
>>> thinking about airtightness (I'm of the 'build tight, ventilate right'
>>> school of thought). It doesn't seem to be an easy subject to read up
>>> about, so I'd welcome any advice or pointers to materials about making
>>> straw bale walls airtight.
>>> I'm planning to use the indoor plaster as the main airtight barrier. It
>>> will probably be clay plaster, though lime is a possible alternative. I
>>> know a bit about tapes to use at window and ceiling junctions and so
>>> forth. My main concern at the moment is about how to use clay
>>> plaster to
>>> make an airtight barrier that stays airtight. So things like minimising
>>> cracking and so on.
>>> I'd be grateful for [links to] any information about practical
>>> techniques and recipes, and information about any airtightness tests.
>>> Thanks, Dave
>>> European strawbale building discussion list
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>>> Strawbale at amper.ped.muni.cz
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