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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.

PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book.

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    • CommentAuthordelprado
    • CommentTimeDec 20th 2017
    As I understand it most highly insulated doors are some sort of polystyrene poly-something derivative. THis is bad for sound attenuation. Its therefore not surprising that I am struggling to find any noise performance data in relation to them. I need a minimum of 40db. Can anyone help?

    • CommentAuthortony
    • CommentTimeDec 20th 2017
    Solid core Fire door blank clad as you wish
    • CommentAuthorIan1961
    • CommentTimeDec 20th 2017
    There are plenty of specialist manufacturers of acoustic doors if you need something this is formally certified to 40db otherwise you should be able to achieve what you want usinag a 44mm solid core fire door with acoustic edge seals and an auto drop-down seal eg:
    • CommentAuthordelprado
    • CommentTimeDec 20th 2017
    Just to be clear I’m talking about an external door and therefore I value is important - and how would I convert hose options?
    • CommentTimeDec 20th 2017
    google says: https://www.liniar.co.uk/windows/passivhaus/

    Or something from a custom builder with the spec you want, e.g. perhaps:

    Or build a porch/lobby with an insulated external door and an acoustic door on the inside.
    • CommentAuthortony
    • CommentTimeDec 20th 2017
    I built my own door, oak frame 32x 95 round solid fire blank with two sheets of pir, clad inside with oak faced 9mm MDF, outside with left over engineered oak flooring, in a door frame with good draught seals
    • CommentAuthorcjard
    • CommentTimeDec 21st 2017
    I bet the double glazing salesmen love getting that one slammed in their face, tony
    • CommentAuthortony
    • CommentTimeDec 21st 2017
    I can’t be bothered with dg, I am a 3g man, they spin a load of nonsense about dg, in central and Northern Europe 3g has become the norm, and they have some very impressive doors too, bit expensive the doors though.
    • CommentAuthorMackers
    • CommentTimeDec 22nd 2017
    Tony, any pictures of the door and pics of details. Sounds nice, well done
    • CommentAuthortony
    • CommentTimeDec 22nd 2017 edited

    cant find much this shows frame, door frame with pir, and how thick the door is, I used routered in nylon covered butyl frame seals all round.

    https://www.dropbox.com/s/n85g4s0cvq7118b/house160.JPG?dl=0 showing inside face
    Nice door Tony - What height did you mount the letter box. :devil::devil::devil::bigsmile:
    • CommentAuthortony
    • CommentTimeDec 23rd 2017
    no letterbox, of course, ss one on the wall in the porch.
    • CommentAuthorCWatters
    • CommentTimeDec 26th 2017
    Google external door 40db and a few companies pop up although not always clear if their external doors have same rating as their internal doors.
    • CommentAuthordelprado
    • CommentTimeDec 28th 2017
    After more research I now think a reasonably high u value door from the somewhat uninspirational composite door companies like solidor might be best. U value of about , so good enough and obviously much better than a PIR/PUR door?
    ''U value of about ,''

    Don't keep us in suspense!
    • CommentAuthordelprado
    • CommentTimeDec 28th 2017
    Lol sorry I meant to say I value of about 1 or as high as 1.4
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