Debating All Aspects of Passive Houses - And May the Best Argument Win!
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I was looking into detailing for airtightness and can find very little information (surprise, surprise,)on minimizing air movement through adapted standard New Zealand construction. It is hard to even get information on the permeability of wraps. Has anyone got suggestions regarding either materials or details with regard to this?
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Take a trip to the national library, or get an inter library loan, and get your hand on
"Airtightness and thermal insulation" by Carllson and Elmroth. Written in about 1979 it is still remarkably current. A classic.
"Air-Vapour Barriers" by David Eyre is a great Canadian book dating from 1979 - it was progressively updated until 1985. The book explains the lessons learned from numberous low energy buildings built back then (airtightness ranged between 1.5-0.6 ach@ 50pa.)
The R2000 design guide is a more contemporary option - though the detailing is not as good. http://www.buildermanual.com/sample.htm
I know the age of these books would suggest thaqt they will be out of date and it's true that they could do with a major review - materials have advanced, concepts and techniques have advanced (but given the high standard of the airtightness achieved in these homes it's not as much as you may like to think.)
Hope this helps.
Mark
Last edited by Mark S (Fri, 04/12/2009 20:57:55)
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Thanks for that reference. Unfortunately I have been unable to get hold of a copy. Perhaps I will buy one online. I have come across the following reference document which may be of interest though:
Design and Detailing for Airtightness
SEDA Design Guides for Scotland : No. 2
available as a pdf at the following address:
http://www.seda.uk.net/dfa/dfa.pdf
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