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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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    • CommentAuthorjms452
    • CommentTimeFeb 23rd 2020
     
    Does anyone Cambridge/North Herts have a half decent thermal imaging camera they would be willing to loan for the weekend (happy to pay/donate) - seems mad to buy one for a few hours work.

    Alternatively if anyone in Cambridge/North Herts also needs one I'd consider buying a lower end one for donations.
  1.  
    No me, I am afraid, but if you do end up getting a 'lower end one' can you do a write-up?

    Years back I got the impression that there was no much really worth having in terms of resolution for under about £6000. I think halfway decent cameras are now available for a lot less, but I do not have the knowledge to judge. I am cr*p at taking ordinary pics, so I doubt IR will be much different for me!
    • CommentAuthorbhommels
    • CommentTimeFeb 24th 2020
     
    Cambridge Carbon Footprint have a couple for just the purpose:
    http://cambridgecarbonfootprint.org/ti-training/
    I guess you should follow a training session and then you are good to go. I have used theirs and the newer one in particular is quite good.
    • CommentAuthorsam_cat
    • CommentTimeFeb 24th 2020
     
    I believe that if you are a customer of octopus energy they will lend you one..

    https://octopus.energy/blog/flir-thermal-cameras/
    •  
      CommentAuthordjh
    • CommentTimeFeb 24th 2020
     
    Posted By: sam_catI believe that if you are a customer of octopus energy they will lend you one..

    Good for them :bigsmile: :bigsmile: :bigsmile:
    • CommentAuthorjms452
    • CommentTimeFeb 24th 2020
     
    Posted By: bhommelshttp://cambridgecarbonfootprint.org/ti-training/


    No sessions advertised but I have enquired.

    It looks like £300 will buy you a FLIR c2 second hand which looks reasonable.
    •  
      CommentAuthordjh
    • CommentTimeFeb 24th 2020
     
    jms452 wrote: "It looks like £300 will buy you a FLIR c2 second hand which looks reasonable."

    But more than the new cost of the devices Octopus are using, which I suppose might be these:

    https://www.flir.com/products/flir-one-gen-3/
    • CommentAuthorjms452
    • CommentTimeFeb 24th 2020
     
    A possible option if I get a new phone.

    Even so ultimately if I want to lend it out I'd prefer a single system without App set up registration etc.
    • CommentAuthorRex
    • CommentTimeFeb 27th 2020
     
    I live in Surrey and Guildford Borough Council have one that they lend (with returnable deposit) to tax payers.

    If it is only to check something, may be contact your local authority.
  2.  
    The usual building tool hire companies have them, HSS Jewson etc, as well as more specialist measuring instrument hire and underfloor heating places. I haven't tried any though.
    • CommentAuthorRex
    • CommentTimeFeb 28th 2020
     
    But if your local authority has them for loan, it will cost zilch, just a refundable deposit.
    • CommentAuthorjms452
    • CommentTimeMar 1st 2020
     
    Hi Bart & Thanks

    Borrowed an old but very functional thermal camera from Cambridge footprint on Friday.

    So far I've:
    Decided it was worth being pedantic with builders.
    That the Skeilings need some attention.
    That threasholds are evil.

    Probably the most interesting big picture discovery was surveying a friend's solid walled recently extended house. The victorian walls were uniformly middling while the new bits had cold lines at virtually every join/corner.
    - If I was buying a new build I'd pay for an official camera survey without batting an eyelid.
    •  
      CommentAuthordjh
    • CommentTimeMar 1st 2020
     
    Posted By: jms452The victorian walls were uniformly middling while the new bits had cold lines at virtually every join/corner.
    - If I was buying a new build I'd pay for an official camera survey without batting an eyelid.

    For some reason, I'm not surprised :cry: But were the cold bridges in the new bit shown in the design or were they added afterwards by the builder? Or in other words, would a camera survey actually be likely to gain you anything?
    • CommentAuthorjms452
    • CommentTimeMar 2nd 2020
     
    Posted By: djhcold bridges in the new bit shown in the design or were they added afterwards by the builder?


    Window perimiters etc may be poorly detailing by architect.
    There were significant cold lines at corners - just in walls (too big to be the extra surface area/exposure).
    • CommentAuthorRex
    • CommentTimeMar 8th 2020
     
    I borrowed the local council Flikr camera a few years ago and was almost horrified by the results.

    New build, built myself, well insulated, 3g but lots of cold areas around all the window permiters. On closer inspection with the Flikr software, only a small actual temp differences. But the colour image differentiates different temps with strong colour changes and IMO, makes the temp difference look worse that it really is.
    • CommentAuthorcjard
    • CommentTimeMar 11th 2020
     
    Do you have an iphone 5, 5s or se anywhere? I can lend you a Flir ONE
    • CommentAuthorjms452
    • CommentTimeMar 14th 2020
     
    Posted By: RexBut the colour image differentiates different temps with strong colour changes and IMO, makes the temp difference look worse that it really is.


    It is easy get bad results. You need to look at the temperatures themselves as well as the colour maps but even then case is needed:
    I could make our EWI look awesome compared to the neighbouring brick wall in the evening when it had cooled down quickly but the bricks were still warm from the day.
    Conversely at 10am the bricks were really cool while the EWI has warmed up so looked like it was loosing lots of head.

    Posted By: cjardDo you have an iphone 5, 5s or se anywhere? I can lend you a Flir ONE

    Thanks for the offer but I'm done for now (and don't have an I phone).
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