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  1. #31
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    Quote Originally Posted by Chris Parks View Post
    Any chance to avoid a roof penetration should be grabbed with both hands. We have two solar tubes installed many years ago and recently leaks started and they might leak again for all I know. I am tempted to pull them out and put solar/LED in as the tubes run through my workshop to a basement room underneath and it will free up room in the WS. Also it allows the lights to be placed in optimal positions instead of where they are now. We had a solar fan installed at the same time and it has continued to operate faultlessly over a period of about 8 years. I

    f I was building a shed again it would have two rooves, one over the other with an air space between them. This would allow the hot air that resulted from the sun hitting the outer layer to be vented from between the layers. it might be a bit more expensive but internal roof insulation should not be needed as the inner layer would not be impacted subject to direct sun exposure. Why someone has not come up with a production version of this is a mystery to me.
    Very simple $$$$$$
    The person who never made a mistake never made anything

    Cheers
    Ray

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  3. #32
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    Jun 2005
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    Helensburgh
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    Quote Originally Posted by rwbuild View Post
    Very simple $$$$$$
    The issue outweighs the dollars for me. Everyone complains about tin rooves, adds internal insulation wich acts a s a heat bank for when the sun goes down and then the heat of the day gets extended into the night hours as the insulation releases the stored heat.
    CHRIS

  4. #33
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    Jan 2008
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    kureelpa
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    Gday Ian, I too have done the sums and agree fully. If your not in the shed who cares if its a bit dim and if you are, turn on as many lights as you need. My shed has 16 flouro and Led lights on the ceiling [ the flouros are being replaced as they die] and other LED lights over the benches but the switches allow me turn on as many as required in multiples of two, it requires turning them in a special sequence, but it can be done. Actually that is the mechanical workshop end of the shed, with the woodworking end the total is 33, I know this because my wife counted them and made an issue of it. I pointed out that 1 hour of welding would run all of them for a week [I made that up] and I have never once used them all at the same time, just as she had never once used more than a third of her cars available power. Apparently that was a sexist comment so I headed back to the safety of the shed.

    I do have three small solar floodlights with motion sensors, two that allow me to enter and leave without tripping over things and one aimed at the beer fridge so I can get fresh supplies without having to turn on the lights or having to turn them off again with a six pack in each hand.

  5. #34
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    Apr 2018
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    Quote Originally Posted by Chris Parks View Post
    If I was building a shed again it would have two rooves, one over the other with an air space between them. This would allow the hot air that resulted from the sun hitting the outer layer to be vented from between the layers. it might be a bit more expensive but internal roof insulation should not be needed as the inner layer would not be impacted subject to direct sun exposure. Why someone has not come up with a production version of this is a mystery to me.
    That only works if you are not trying to artificially control the temperature internally so is only of use in a shed type scenario, it is of no value to a habitable space.

  6. #35
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    Helensburgh
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    Quote Originally Posted by Beardy View Post
    That only works if you are not trying to artificially control the temperature internally so is only of use in a shed type scenario, it is of no value to a habitable space.
    Beardy, I must say I am puzzled by your response.
    CHRIS

  7. #36
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    Quote Originally Posted by Chris Parks View Post
    Beardy, I must say I am puzzled by your response.
    I get confused by what I say myself sometimes lol

    What I was meaning is that you are not creating any thermal barrier so any heating or cooling being done internally is easily lost through the uninsulated iron, all you do achieve is shading of the roof by adding a second layer.

  8. #37
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    Helensburgh
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    Quote Originally Posted by Beardy View Post
    I get confused by what I say myself sometimes lol

    What I was meaning is that you are not creating any thermal barrier so any heating or cooling being done internally is easily lost through the uninsulated iron, all you do achieve is shading of the roof by adding a second layer.
    The shading is what I was referring to as I can put a jumper on in the winter. Landrovers used to use a second roof spaced above the main one to get the same effect as the air was forced through the space between the two. Of course if you had conditioned air then a second roof plus insulation would be very effective. When it comes down to it a bare tin roof open to the sun is just one big radiator. My apologies to the OP for going off topic.
    CHRIS

  9. #38
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    Jan 2008
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    Well it's slowly getting there. Brother went away for a week and I had a few projects of my own to attend to so things slowed to a crawl for a while but with a bit of effort over the weekend it should be ready for some paint by Monday. Ceiling battens are going up and then it's over to the Sparky to rough it in so it can be lined.
    IMG_0203.jpgIMG_0163.jpgIMG_0161.jpg

  10. #39
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    Quote Originally Posted by THE BARON View Post
    Well it's slowly getting there. Brother went away for a week and I had a few projects of my own to attend to so things slowed to a crawl for a while but with a bit of effort over the weekend it should be ready for some paint by Monday. Ceiling battens are going up and then it's over to the Sparky to rough it in so it can be lined.
    Not a good idea in a shed, line the run all power externally in plastic trays. It make it far easier to modify and change things in the years to come. I had the electricals in my shed changed some years ago and that was the first thing the sparky did and I have praised his fore thought many times.
    CHRIS

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