[GSBN] New website: Straw Bale Buildings of Ontario

[Pete Walker]

Dear Bohdan

We have completed a certified thermal conductivity test on a rendered 3.5 x
3.5 m x 0.49 m thick straw bale panel. The U-value (thermal transmittance
rather than resistance) was 0.19 W/m2k. An R value of 5.3 m2k/W. This is of
course dependent on straw density and render thickness amongst other things,
but I believe is a reliable indication of general performance.

Regards

Pete


Prof. Pete Walker,
Director BRE Centre for Innovative Construction Materials,
Dept. Architecture & Civil Engineering,
University of Bath,
Bath BA2 7AY,
UK.
Tel: 01225 386646
Fax: 01225 386691
http://www.bath.ac.uk/bre


-----Original Message-----
From: GSBN-bounces at greenbuilder.com [mailto:GSBN-bounces at greenbuilder.com]
On Behalf Of Bohdan Dorniak
Sent: 30 April 2010 08:36
To: '(private, with public archives) Global Straw Building Network'
Subject: Re: [GSBN] New website: Straw Bale Buildings of Ontario

 Hi all balers
I was wondering if there are any recognised tests done for R values for
rendered strawbale walls.
Having looked at various books e.g. B.King's, Lacinski's, etc. - they all
seem to skirt around this issue.
Would appreciate some wise words.
Here in Australia after the Victorian Bushfires we now have to re test
rendered strawbales for new and higher rated heat fluxes.
Will keep you all in the loop.

Regards,
Bohdan Dorniak





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