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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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    • CommentAuthornbishara
    • CommentTimeJul 27th 2019 edited
     
    I think I know the answer to this, but I'm just checking.

    Secondhand Shed/ cabin we're likely to spend winter in needs assembling. We have the floor but my partner had to cut it into Four pieces to get it out.

    I have managed to persuade my partner but it would be a good idea to insulate the base, but he has different ideas from me how to do that.

    I have spoken I have spoken to the log cabin company (it’s a lillevilla 125) about what they do – and they install 25 mm of standard sheet installation in the base, held up with nails. They don’t go all the way down to the bottom (50 mm) so that the bearers can breathe a bit.

    That seems reasonable to me, so I was planning on insulating the floor in four pieces and my partner then wants to T and G all over the top again which I reckon it would add more insulation and hold the whole lot together

    Hey is now saying that my idea is all wrong and that what we need to do is put the base in and then drill holes in it and use spray foam insulation.

    I think that this would be uncontrollable, possibly distort the TNG/ooze everywhere and also that the bearers wouldn’t breeze at all. He thinks they will not breathe at all anyway because there was a wooden beam around the outside.

    It’s possible that he is right and I am wrong – what do you think? :-)

    Thanks!
    • CommentAuthortony
    • CommentTimeJul 27th 2019 edited
     
    Spray foam for me is a very expensive non starter, use sheet insulation. If there is the headroom I would build it on top of existing shed floor, lay sheet insulation then sheet of poly then t&g wood sheets glued together as the floor.
    • CommentAuthornbishara
    • CommentTimeJul 27th 2019
     
    Thanks! That’s pretty much what I thought ;)
    • CommentAuthorrevor
    • CommentTimeJul 28th 2019
     
    Agree with Tony. Spray foam is expensive and a lazy and uncertain way of doing the job. If you can lay insulation over the floor as much as headroom will take.(I built and office /come lounge in our shed with concrete floor put 25 mm on the concrete floor and loose laid P5 chipboard flooring on top then carpeted it with carpet tiles. Only wish had put 50 mm down it would have taken it.Worked out really well though in the end.
  1.  
    As well as insulating in the base (and above if you have the head height) with solid insulation, I'd also look at what you are siting the shed on. Perhaps look at sitting it on a bed of leca or foamglass if your finances can cover it, with land drains beneath to take away any moisture that could wick heat away.
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