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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.

Buy individually or both books together. Delivery is free!


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      CommentAuthordjh
    • CommentTimeDec 7th 2020
     
    Posted By: gravelld
    Posted By: derekeMy door came with a piece of aluminium which this morning has a nice bead of condensation on it confirming my suspicions that I'd need to replace it at some point.
    Why would you need to replace it if it's alu?

    Because it has condensation on it?
    • CommentAuthordereke
    • CommentTimeDec 8th 2020
     
    yeah condensation. the aluminium is 6C while the door 14C.
    • CommentAuthortony
    • CommentTimeDec 8th 2020
     
    Very good conductor so likely bridging heat outside
    • CommentAuthorgravelld
    • CommentTimeDec 9th 2020
     
    Ok - sorry, yes, I suppose if it's a threshold it will be bridging.... but aren't most thresholds on a decent door aluminium? I guess some could have some sort of break in them... mine don't, but then they aren't "top-top" spec.

    And still - is it a problem if there's a bit of condensation on it now and then? Yes, if it's happening a lot it might be a problem but...
    • CommentAuthorbxman
    • CommentTimeDec 9th 2020
     
    I think you can safely say it will have condensation on it when ever the outside is >5/6 deg less than the internal temp of the house unless you are artificially lowering the RH.
    • CommentAuthordereke
    • CommentTimeDec 10th 2020
     
    this is in my office which I have taken a lot of care to make air tight and reduce bridging. I had plans to make a super insulated door as well but time constraints meant I had to buy one and this threshold is what they sent. I cried a little when I installed it but always planned to replace it as I knew it would be the weak point. Maybe not a big deal in the grand scheme of things but apart from having a place to work the point of building this thing was to put my construction and "green building" credentials to the test. I've given up on the hope of building a house (found one we love anyway) so this was/is my grand design :bigsmile:
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