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Green Building Bible, Fourth Edition
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Fundamentals: Limiting thermal bridging and air leakage: Robust construction details

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  1.  
    • CommentAuthorMike George
    • CommentTimeJan 17th 2015 edited
     
    Just thought I would share this one as it's very useful to check if your chosen construction is fundamentally okay.
    Some discussions particularly warm roof/cold roof thread prompted me to look this one up - Last time I looked this wasn't freely available but is now :)
    It has its flaws as often there are conflicting requirements in different Approved Documents. However, these details concentrate on thermal requirements and are worth a look if trying to get your head around good principles of thermal design :bigsmile: http://regulations.completepicture.co.uk/pdf/Building%20Regulations/Construction%20Details/Limiting%20thermal%20bridging%20and%20air%20leakage-%20Robust%20construction%20details%20for%20dwell.pdf
    • CommentAuthorsquirrel
    • CommentTimeJan 18th 2015 edited
     
    Thanks Mike, very useful. Still thinking about my dodgy kitchen roof...

    It might be worth pointing out that the U-values and thickness of insulation in there seem to come from older building regs? At least form the quick look I had.
  3.  
    Yes good point it is old, around 2002 I believe so insulation requirements out of date. Though the principles of thermal design remain essentially the same.
    • CommentAuthortony
    • CommentTimeJan 18th 2015
     
    No mention of dot and dab, lintel details all have lots of thermal bridging, no tony trays or other air leakage mitigation for floors, reveals with thermal bridges, no check reveals,

    Too long!
    • CommentAuthorMike George
    • CommentTimeJan 18th 2015 edited
     
    Like I said it has its faults - but it is good for understanding what is good and bad generally. Though what's good and bad on this forum is certainly subjective :)

    I believe the details are still relied upon and referenced to as accredited details for compliance with Part L (though obviously there are other (often conflicting) requirements relating to some things on your list :) The level of detail for things on your list will mostly require bespoke details anyway - so not something you will find in any generic publication.

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