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What we really need is white paint in the summer, black paint in the winter - reversible roofs, if you will. That said, in the desert southwest and many places in the world, white roofs are common. I wish it were more common in the southeast...
Black in the winter would make the building lose heat faster - especially during the night.
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What we really need is white paint in the summer, black paint in the winter - reversible roofs, if you will. That said, in the desert southwest and many places in the world, white roofs are common. I wish it were more common in the southeast...
If you look at old architecture in rural Georgia and Alabama. Houses are on rocks raised above the ground (air circulates underneath), 10 ft ceilings, a huge attic fan to pull cool air in in the evening, tall trees planted next to the house for shade (we have 4 pecan trees), and reflective tin roofs (if still shiny). This helped significantly to cooling in the summer. Winters aren't cold enough to warrant more than a…
In general I think a lot of energy savings can be realized by accommodating buildings to the prevailing climate, and using passive means of heating and cooling.
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Dust would settle on them despite of humidity levels I think
It likely rains enough in humid environments to make dust a non issue. Both because you get vastly less dust in the air and because it washes away most dust that does show up as long as the roof has a significant slant to it. However you don’t need white to see significant benefit over a black roof, even just green helps.
Someone needs to compile a list of all this fringe tech that I see popping up in my feeds, almost daily now. I know there are techpress blogs that pump out articles like this, but there doesn't seem to be an authoritative compendium of such tech anywhere on the net. I could curate this by hand with 3 hours of free time and some Red Bull I suppose. The reason I want this is because we seem to be swimming in innovation…
Contact info is in my profile if interested.
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>They get dirty fast do they get dirty fast in both humid and not humid climates? I would think in not humid, dry climates it might be more useful?
They show any dirt really clearly so for houses it’s a crummy choice because it’s not hidden on out of view (on most houses, if it’s a modern house with a flat roof you could potentially use a flat white painted roof) which means cleaning a lot.
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Nice they have a White 2.0 too since last year (up to 99.6% reflective). And as with Black 3.0 banned for Colour criminals ;).
If that's 99.6% reflective, how is this new paint the whitest ever at only 98%?
Someone needs to compile a list of all this fringe tech that I see popping up in my feeds, almost daily now. I know there are techpress blogs that pump out articles like this, but there doesn't seem to be an authoritative compendium of such tech anywhere on the net. I could curate this by hand with 3 hours of free time and some Red Bull I suppose. The reason I want this is because we seem to be swimming in innovation…
Also: Black 3.0, the purchasable variant of Vantablack For sale at: https://www.culturehustleusa.com/
I assume this could be useful to shield something in space with extremely specific temperature tolerances. I'm not sure about the suggestion that people are going to paint their roofs with it. People already have the opportunity to paint their roofs with cheap white paint which would provide nearly all the benefits this would, and still choose not to do it.
What we really need is white paint in the summer, black paint in the winter - reversible roofs, if you will. That said, in the desert southwest and many places in the world, white roofs are common. I wish it were more common in the southeast...
In the summer, they shade the roof keeping it cooler.
In the winter, they provide an additional ventilation area that allows heat to escape without melting snow (thus mitigating risk of ice dams). Even a snow covered solar panel provides a benefit.
Someone needs to compile a list of all this fringe tech that I see popping up in my feeds, almost daily now. I know there are techpress blogs that pump out articles like this, but there doesn't seem to be an authoritative compendium of such tech anywhere on the net. I could curate this by hand with 3 hours of free time and some Red Bull I suppose. The reason I want this is because we seem to be swimming in innovation…
This is nothing new. You are just now hearing more about it because of how journalism is being done online. There have always been lots of revolutionary things happening in labs. They are rarely ever practical, or if they are it will take decades to bring to market. How many dozens of new battery techs are announced as being "better than lithium ion" only to disappear once everyone realized how impractical they are.…