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Green Building Bible, Fourth Edition
Green Building Bible, fourth edition (both books)
These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment.

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Building Regulations and Standards: U values

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  1.  
    • CommentAuthorrooster
    • CommentTimeMar 19th 2008 edited
     
    hi im new to all this but would appriecate a bit of info in relation to u values. an insulation installer gave me a quote for our house today with some u value detail, it reads like this.
    slopes - insulate with 140mm high density insulation with 50 mm kingspan attached by 2by1 battens, gives you a u value of .20
    attic - insulate between and over rafters with 350mm fibreglass insulation, gives you a u value of .11
    partitions - insulate with 100mm aqustic insulation
    ceilings - insulate with 250 mm fibreglass insulation, gives you a u value of .14
    Seal around windows

    Could anyone tell me are u values achieved by this amount of insulation the standard or better or worse...????????????????????????????????????????
  2.  
    Google Building Regulations and look at the tables in parts L1A (new bld) and L1B (refurb). They are all close or better. 0.2 is the only one that just wings it.

    Nick
    • CommentAuthorrooster
    • CommentTimeMar 20th 2008
     
    cheers nick appreciate it any more info greatly accepted
  4.  
    Hi Rooster, See pages 18 and 19. Table 1 gives acceptable values though there is deign flexibity if you want to vary them for some reason, such as height restrictions. Happy reading!

    http://www.planningportal.gov.uk/uploads/br/BR_PDF_ADL1B_2006.pdf
    • CommentAuthortony
    • CommentTimeMar 20th 2008
     
    Why go for minimum when you have the opportunity to do it better than the is required by law?
    • CommentAuthorskywalker
    • CommentTimeMar 20th 2008
     
    Hello

    Attic & ceilings are listed seperately. 'Ceilings' are only worth insulating if there is a cold space above them - an attic/void/flat roof.

    Do you have solid floors?

    S.
    • CommentAuthorMike George
    • CommentTimeMar 20th 2008 edited
     
    Posted By: tonyWhy go for minimum when you have the opportunity to do it better than the is required by law?


    Humble apologies - I should have said that - no caffeine yet
    • CommentAuthorCWatters
    • CommentTimeMar 20th 2008
     
    It sounds like you may also need to comply with Part E.

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