Forget AC - Paint Your House This Instead!
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- čas přidán 28. 10. 2021
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There are few things that can make as big a difference as a fresh coat of paint. But paint does so much more than look nice, It can protect from the elements, and even help reflect the suns energy. So when researchers from Purdue University believe they have Invented the worlds whitest paint, there are some very interesting ramifications. And what if this paint could help fight climate change?! That’s what we are talking about today In Two Bit da Vinci!
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Ricky, this is not NEW, Rhino Shield has been selling THERMAL paint, & painting homes for DECADES.
Rhino Shield 🛡️ uses NASA technology.
@@markplott4820 is Rhino Shield the same as Climate active paint by Therno Shield? Is also NASA research claimed, AirCrete Harry has a CZcams test on his vlogg in a Prototype Aircrete mini Dome,GOOGLE Aircrete Harry.
So the oceans melting is a good thing because there's less white ice and snow to reflect the heat back into the atmosphere? I've heard exactly the opposite from most other sources.
Dude, come on
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Living in Thailand we painted the walls bright white and used a bright white steel roof. Our aircon units powered by solar are only 8,500 BTU
that's awesome! we should collab sometime when I come visit :)
@@TwoBitDaVinci what about to use mirrors 🪞 instead of white paint?
@@ajarivas72 window mirror film... thast what most highrise buildings use.
i was living in bkk for 10 years. and i can scrap a thick layer of black dust from my window screens , even after cleening them the day before. I assume you live in hua hin (where i live now) or in the south.. bkk area has industrial and traffic pollution. While in chiang mai, issan and chonburi farmers have the habit of burning stuff.. all things that dont go well with a perfect white exteriour.
Didnt realize painting the house white is an option till now.. and already installed a 20kw solar system for 400k bath. so there is enough electric to run all aircons 24 hours and still get money for excess power.
I coated my composite roof with a white roof coating. The effect was immediate. A roof that was scorching hot to touch became cool to the touch. It really did reflect the heat ... BUT ... I live in a dirty city. If you look at my roof today, it is no longer white. It is somewhere between off white and dirty grey. Hosing it down does very little to improve it.
I think it is still a good idea to paint city roofs white, but I question the value of high tech paint if it is only going to get dirty in a matter of months (or weeks). When I installed solar hot water, I didn't get the super efficient solar panels because all the panels work when the sun is out and don't when it is cloudy or overcast. The efficiency of the panels were not that important. If it was hot when I got into my car, I had hot water in the house. If not, then not ... a higher efficiency panel would not change that.
I can't speak to the exterior walls of a home. High tech paint may make a difference. But I think the above experience applies to roof coating. If I had to do it again, I would still coat my roof with the same white roofing material if it were more cost effective than a high tech equivalent; either way, it will be "grey" in no time from the pollution falling out of the city sky. Something to think about.
That makes me wonder if there is a slick coating that could be applied to the white paint without degrading the paint’s effectiveness but that would allow pollution to be easily washed off.
That's exactly what I was thinking. White gets dirty. If they could prove that even a dirty white roof (now light grey-brown) is cooler than a darker roofs, that's nice, but we already have light neutral paints and shingles. HOAs may not always accept light roofs however.
The proper paint has ceramic in it. Even if its black the heat can't transfer to your house
Any high gloss paint will resist getting as dirty
@@jamesengland7461 That's exactly what I did for my sunroom's metal roof. Extra white with a coat of high gloss over it.
How about colour changing paint, that changes based on "Temperature". White during the hot sunny day and black during the cold or cooler evening.
It's a cool thought but IMHO I don't think it would matter what color it was in the evening. The darker colors use the heat saved over the course of the day in the thermal mass of the object and release it when the heat source isn't present. I think that if they designed a house with colored walls/ceiling/floor in a certain way using this paint and how much natural light is let the house could be super beneficial and more than likely eliminate the need for hvac systems.
That is termed as “phase changing” which does exist as a form of salt, used as a storage device for an active solar collector. The salt is a solid when cool, but liquifies when heated. In support of this particular paint, it is feasible to use temporary covers for the warmer season, and then removed and stored until needed again.
It might not be much more expensive to repaint your house with a different color every few months.
Perhaps electrically realign particles from one way to another for changing color.
A simpler solution would be large roof overhangs paired with plants which would shade the structure in the summer but allow solar gain over the winter. Deciduous trees (could be fruit trees)which lose their leaves over the winter paired with some strategically placed trellises for vining plants such as grapes or green beans would accomplish this would also provide food. It’s easy to predict the sun’s angle throughout the year with planning. It simply requires the design to consider passive solar performance. New technologies are great but many old technologies are still very valid and have been proven over thousands of years. Some new technologies are going to be game changing awesomeness and others aren’t going to make the cut. Home orientation, thermal mass, shade from roof overhangs/vegetation, insulation… are also all effective in terms of outright performance, user friendliness as well as budget while being aesthetically pleasing. Yes bring on the new tech but just good application of old tech can typically do a large portion of the job if not all of it.
This on the heels of the blackest automotive paint ever being created.
I'm thinking white roofs and black walls. High sun gets reflected in summer and low sun gets absorbed in winter. There's got to be some ideal geometry to it, based on latitude. Factor it into an overall passive solar solution. Similar to trees shading your house in summer and being leafless in winter. Multiple overlapping solutions providing a year-round benefit. There may be literal grey areas too. ;)
Time to conduct some experiments! 🤔
Hold my beer. 🍺🇺🇸
@@goncalomedeiros4918 probably easier to existing designs the have over hangs so only low angle winter light hits the sun facing wall.
Super black paint could be useful for heating water.
This is old news, the studies have already been done, yes, painting the rooftop of all the southern states would easily meet the targets. But...freedom....and hvac industry. So there.
Actually, the blackest paint is not suitable for cars, though there are some automotive grade paints that come close. And, yes. There are architectural solutions to passive heating/cooling based on latitude; mostly involving roof overhang on the sunward side and the like.
@@goncalomedeiros4918 I've thought about this myself. I live in a mobile home park. And since I have no trees to shade my trailer, I've thought that I would like to put a high wall beside it to shield it from the sun. (I can't attach anything to the trailer itself.) But it would be louvered like vertical blinds to let the sun in in winter or to open sections by windows to enjoy the view. (Not that I have a view to enjoy in a trailer park. lol)
You're on the right track. The more likely it is to face the sun on cold, wintry days, the darker it should be. The more likely it is to face summer noon sun, the more reflective it should be. Awnings help too. These aren't hypothetical; they're standard elements of passive solar building design.
Stick it on screens that can be rolled up in winter? Houses that adapt to the seasons should be more common by now.
Near the equator- there ARE no seasons... even up to the tropics. No real need for heat absorption. Those winters are MILD and that's putting it mildly.
@@melissachartres3219 Plenty of people don't live near the equator. And those that don't use the most energy
@@veganpotterthevegan I would posit that some people (regardless of where they live) are just energy hogs, while others are not. My guess would have been that those who live in temperate climates and nowhere near the equator use the least energy or all.
@@melissachartres3219 a disproportionate percentage of people living near the equator are far too poor to be energy hogs.
Thanks for another great video. Louvers come to mind. One side white and the other side black. Summer expose white and winter expose black. Maybe awnings over windows and doors made of louvers. Lots of possibilities.
Oh that’s brilliant!
So in your infinite wisdom, how do you propose those louvers get turned? All this ignorance does not provide possibilities, it just proves ignorance wants to be in charge!
Great idea
@@kevinm3751
The wall could be made of tubes or pipes. Half the pipe is painted black and the other half is painted white, pipes will rotate so the correct face is point out.
@@kevinm3751 why do you find nessary to be rude to someone sharing an idea?
This was my science fair project in middle school. I made tiny houses and painted some in reflective white roof coatings and compared the delta T
Material scientists need to develop a temperature sensitive version. When warmer its whiter & more reflective, then as it gets colder the paint becomes darker & less reflective. Should stop the winter chilling effect.
That would be brilliant!
I love this out if 5he box thinking! Great idea!
Do it.
I live in a humid tropical area (Queensland) and when replacing my roof, chose white painted metal ('Colourbond zincalume'). Unfortunately, as others before me found, in our climate, this colour invites algal growth, which turns black, so the roof quite quickly turned spotted black, which compromised and negated the hoped-for cooling bonus. The house has no air-conditioning.
It sounds like some colour in-between would be ideal. In Italy it is terracotta... which gets very warm but not the burning heat that light or dark grey produce. I put my hand on some of the different coloured tiles in the houses in my road to prove this.
Spray it with a Clorox bleach solution.
Perhaps its an ingredient in the paint color that the algae likes, I'm thinking something that is in common with asphalt shingle ingredients. The asphalt shingle companies changed materials, now shingles are only warranted against the black algae for 10 years. You see roofs all over the place with black stains. One good way to combat it is 4" wide copper or zinc strips along all peaks, and below all dormer windows, vent pipes etc. The rain hitting the strip washes copper or zinc across roof, preventing growth. Have to do a good clean job, before installing strips.
Great video, very important topic.
People are REALLY dumb. I live in a hot climate, where most people spend a lot of money using plenty of energy on airconditioning, yet the majority of new homes have a dark coloured roof, often charcoal or even black- ABSOLUTELY CRAZY.
Even basic white keeps your house and your surrounding environment cooler.
We fitted a new white roof to our early ‘70’s house in 2012.
The difference in summer cooling cost was dramatic!
@FutureSystems738 Totally agree, It beats me that new housing developments mostly ignore the benefits home orientation for cost-effective temperature management too. 🙄
Something so basic should be part of the approval process.
Actually, if they did it on louvers set on a roof, it good cool during the summer, and at winter just change their orientation so the light hits a dark roof, adding heat to the home. They have also added a live roof system, growing grass, and flowering plants on an office building. It reduced the cooling cost as well as helped clean the air, as well as reduced the water run off to the sewers.
We already do that here in Florida. It works, sort of. White rooms require pressurewashing often to maintain their reflective qualities. What ever savings gets wiped out by the cost of maintenance.
If you liked this subject, you could do a video on ceramic impregnated paint or ceramic tint.
So need panels that can flip on the roof, white on one side, black on the other, and water line in the middle so can transfer the 10kW of cooling/heating to indoor radiator/under floor lines as needed.
Solar panels are better since they generate electricity, but this paint can cover the areas that don't have panels. Actually instead of painting it on the house directly, having painted, *easily* removable, panels that only are installed during summer could be the best option.
Or both!
Flip the panels in the fall and expose the world's most heat absorbent paint.
You could probably make a device like that with bimetallic strip. So when the bimetallic strip heats it will move the panel.
Or like make it from one of those automatic greenhouse window thing.
Naw, paint the roof and install bifacial panels above it. Insulate the roof extra good if you have cold winters.
I think this also would work nicely here in finland. We get so little sun light in winter anyway that it really doesnt help with heating. But the benefit in summer is huge
Yeah same in the UK. Our homes are insulated so what little heat from the winter sunshine hits the outside of the building doesn't make it in anyway
@@doritoification yes true. I almost forgot that. We also have alot of insulation. Yes the insulation will definitely block the heat.
UK and Finland need to use blinds. Black or normal in the cold months the white in summer only
@@rem145 truuu
Could see this worked in the south facing side of structures while the shadow side is designed to cool by radiating heat away.
In Japan, car insurance is cheaper if your car is white. There is less deterioration on plastic, rubber, upholstery, etc when the car, inside and out, is cooler.
Before retirement I did some spectroscopy testing at my work that calibrated some instruments we were building for NASA Earth Sciences satellites. A very pure white powder packed carefully to a flat surface in a recess in a target panel was one part of that calibration of the spectrometer. I do not recall it being barium sulfate. Another was the coating inside a large internally lit sphere that served as a uniform white light source. It is known as an integration sphere and its opening had to be larger than the angle of acceptance of the spectrometer that might have been that compound.
What I found in the laboratory that this spectrometer was located was that reflections off of the other surfaces in that room would poorly influence some of the more sensitive readings.
I had to find curtain material to block those reflections that was truly black.
There were some commercially made dark room curtains that we had, around the sides but the "white" ceiling tiles were distorting the the uniformity and had to be covered with black cloth. It was then I found that what seems black to our eyes is not necessarily black to that spectrometer. Indeed it had a reddish hue towards the red end of the visible. Many swatches of "black" cloth later and I had found the right combination for absorbing as uniformly as our 'white' targets did the opposite.
Thanks for reminding me of the subtleties needed in accurate scientific testing. It is not as simple as it sometimes seems. My first thoughts as you described this paint was, of how quickly the soot from urban air pollution would render it right back to that 90% or less reflective level that is so common with such paints, alas.
The white material you mention is called Spectralon and it is made of sintered PTFE (teflon) powder
Ok for the roofs but not sure about the walls : problem with vertical walls is that most energy reflected by those go to the ground, heating the next house, pedestrians, cars, and streets. Also if the paint reflect some long wavelength infrared it can help keeping in the heating. So it is not all bad for cold climate. In architecture the most important design is the south face of the house, that must reflect high sun of summer and try to get in as much as possible low sun of winter.
But could you not argue that that would happen anyway as well as there is a chance that that light that reflecting off the wall will have an opportunity too reflect off the floor as well.
This is not intended as an argument I think your point is valid.
Offcause this would make the roads hotter as they are black.
This would need too be considered if they decide too go with it.
@@WhyplayGaming White roads and plazas could be interesting, too. About the walls there are interesting concepts with deep windows and apparent structures sculpting the outside of building, that insure direct sunlight do not reach interiors, but yet you can see outside. Useful for desert buildings. As most of Europe will shift toward arid, will be needed.
The roof is your primary problem, but the east and west walls catch a lot of sunlight in the summer. Get rid of all east and west windows.
@@Cspacecat natural light is one of the most important aspects of a heathy home with good wall design you can get light but not heat, see desert designs: you can see outside but you are always in the shade.
@@AlexandreLollini I have about 60 sq. ft. of glass on the north side, but about 340 sq. ft. on the south side.
Question is how long can you practically keep it white? Dust and stains would drastically reduce efficiency.
that varies from region. It should work as solar panels: as long as you clean frequently it won't make a difference. My only conseran is the degradation of material like corrosion.
In '87 I bought a ceramic infused white paint for roof cooling/fireproofing an asphalt roof. It was $1000. It applied as a thick goop, rolled out. It was a lot cooler in Sacramento summers, 115 degree, but I sold in '90 to make double the purchase price, so I didn't get my money's worth. Same on the added attic reflective foil/insulation. But I tripled my money 17 years later on a house I bought at the dip in Folsom, CA. The left over white paint really cooled down my garage door in Folsom from untouchable to a little warm. That allowed me to use my garage for a poker party every weekend, 3 tables.
I designed my house as solar passive over 25 years back. I didn't tell the builder who would have put the price up 10% if he knew. The house never needs heating daytime in winter if its 60% sunny. In summer many people on walking in asked if we had air conditioning, on 35 deg C days the house is 26 deg C inside. This was a stupidly simple thing to do for zero cost and I couldn't guess how much it saved me over the years. I did stuff up the colour of the roof dark green! I'm colour blind so let my wife choose all, not realizing the effect 😖
Fascinating. Thank you.
Get a rollable sheet for your roof- white on one side, black on the other. In summer have the white side up and black side down. The white will reflect the suns energy and the black will absorb heat from the house.
In winter, the black will absorb energy from the sun and the white bottom will reflect energy from the house back into it.
You can choose what point in spring and fall to roll up the sheet, and unravel it in the opposite direction.
Back in the late 1970s, after I bought my second home, I painted the exterior white. When summer rolled around, it actually looked pink!
White paint reduces thermal gain. It doesn't remove humidity. You still need A/C.
Very true
Not in the desert!
Great video!
I bought a metal shed and painted the roof white and when during sunny weather I touch the surface it’s cold compared the walls.
Great but I can imagine how painful anything painted with it would be to look at on a summers day without sunglasses...Even normal white paint hurts my eyes in the Australian summer, might be worth it still though.
I would wear sunglasses, but that's just me.
@@garethbaus5471 NObody wears them more than me but sometimes you just have to take them off or some just cant wear them all the time because they have glasses already.
DIRT . This is a 12 minute video that went over all the facts and pro's while omitting one simple fact that makes 98% white paint practically useless.
I imagine that readily available 80% reflective paint is already stretching the cleaning efforts that the regular Joe can put in.
One simple fact? What is the fact? You've piqued my curiosity.
@@melissachartres3219 Dirt is the answer, it will have to be kept very clean to maintain it's effectiveness.
@@firstname1lastname127 ah! understood. thanks for the speedy reply.
first thing that came to mind about this paint is using it on space crafts. I keep hearing they have problems keeping cool under direct sunlight, especially when dealing with cryogenic fuels. paint the hull white or even throw a replaceable white tarp over the tanks.
Yes very true!
We are waaaay beyond that for space crafts: at the moment we use multilayer coatings that absorb, reflect, radiate and transmit selective wavebands, tailored for the specific application of that particular object
Shading windows from incoming direct sunlight, good insulation including window frames and 2 or 3 layer windows.
Having air as insulation between roof and the insulation on the attic, and have that space well ventilated. Solar panels on the roof adds shade for the roof, hence for the rest of the building.
Controlled ventilation, where very cold or very hot outside air is tempered before entering the inside of the house (some do it with ducts underground).
All these are clever ways to construct a building to need less energy!
And terracotta color and not any shade of grey
Like you mention...We have a cheapo air intake system with 20cm diameter tubes 200 cm deep under ground for 30m. Cools the air in summer and warms it in winter. Goes into a central air circulation system of course. That costs virtually nothing to run. No silly noisy fans in each room to let the street noise in
In Florida, summer cooling is my biggest energy cost. We have lots of sea breeze clouds and wet lands around here. It is low population density, so on the surface it looks like the benefits out weigh the concerns. I will need to repaint in a few years so I hope to be able to try this product.
why you just do not repaint now with ordinary white color? I mean we have white house, white windows, white steel constructions (like first door frame) and temperature is always 10 *C less than outside. And white window shades (but we rarely use them).
I live in Malaysia and built a house using passive cooling (high ceilings, under roof air flow, large eaves for shading) but still a couple of months have temps that cause sweat even when sitting. This paint is what I need on my metal roof! The temps you described would take the temp down to 68-80F Just perfect! I'd love to do a test!
Check out nighthawkinlight’s channel, he made his own barium sulphate paint
@@Gabriel-gw8hf Ah, I remember that's the dude that make it out of household materials.
Good report
Did this a few years ago, with one side of the roof covered in solar which shades the roof, and the other that gets indirect sun but still gets hot painted white using ordinary house paint. Here in Australia we've had temperatures up to 49C in summer. I still haven't used my A/C since then, and on a hot summer's day the metal roof feels cool to the touch, whereas before it was burning hot. The only downside, as Two Bit mentions, is that in winter when I want the roof to heat up it doesn't, and this means that damp can sometimes form in parts of the roof cavity from the wet areas and kitchen steam etc. But overall it's a massive plus and I only pay for electricity in winter.
At least your suburb let you paint your house. So many suburbs in Ausfalia only let you choose heritage colours now
@@janeblogs324 The side of the roof that faces the street is covered in solar, so no need to paint that side. I painted the side of the roof away from the street, but I don't think my suburb was too upset.
They're missing a key function of air conditioners. Reducing humidity. In some locations, that's even more important than reducing the temperature.
Just cooler not "more" cooler. Informative video. Thanks
I'm a painter (artist) and I've known for decades about the passive warming affects of color. White is less warm than darker shades in, for example, direct sunlight. But actually cooling is pretty crazy - smart people at work here. Thanks for sharing the info.
Cooling works because any surface at any temperature is radiating away its heat all the time, as infrared radiation.¹ BUT! That radiation has to go somewhere. Thus, our world is full of infrared radiation bouncing around everywhere, emitted from one surface and absorbed by another surface. Everything is constantly giving off but also taking in heat. So if a surface is cooler than everything around it, it will absorb more than it emits, and warm up. But if it's warmer than its surroundings, it will emit more than it absorbs, and thus cool off.
Thus, if you can come up with a substance that emits the normal amount of this radiation, but only absorbs a small amount of it, it will tend to cool down faster than it heats up.
¹Technically it's not always infrared. It becomes visible or even ultraviolet light if the temperature is high enough. For example, an object at 4400°F (or 2700 Kelvin) will emit light about the same color as a 2700K light bulb. (This is no coincidence.)
As an ac tech i would like this
Cool vid! Thanks
In design of HVAC systems, we were taught to treat white surfaces as if they were dark for sizing of the equipment. Reasons: 1) White surfaces get dirty, increasing their heat absorption dramatically, particularly in urban areas. 2) In the future, the owner may decide they like a darker color.
I live in a white painted building. I fact we had to go for a slightly off white to avoid the blinding glare akin to snow blindness.
This is the reason why painting the world black with asphalt and solar panels on all the roofs is a excellent way of making the earth warmer and warmer.
A quick look at Stefan-boltzmanns law and we quickly realize that painting the whole world black would immediately make Earth's average temperature reach 40°c!
Back in the 90's i used a product PolarSeal Top Security which is a 100% acrylic latex which contained a titanium dioxide at a high pigment volume concentration and achieved excellent results. We are at approx. 12 deg N latitude in the tropics and on a hot day both concrete and sheet metal roofs were cool to touch. Approx. 2-3 deg Celcius cooler than surroundings. It went on at a coverage of 50 sq. ft per gallon and served as a waterproof membrane as well. After 20+ years its still performing well.
For winter, you can take advantage of the different angles of light. If you let light in from the side moreso than the top during winter, and also reflects more light during summer, you can passively cool and heat your house
There is a house a few streets away from me where a facade is made almost entierly out of black metal cladding but it doesn't need any AC. It's got big overhangs in the first floor and shading on the windows in the second. The metal facade has ventilation gap and then 26cm of grey EPS insolation. The walls and floors are all made out od solid concrete so it takes a lot of energy to heat it up in the summer and because the temperatures drops bellow 20 celsius (68 fahrneheit) at night the house stay nice and cold all throught the day. Because of the big overhangs light never actually shines directly into the house but it bounces off of the enviroment around it.
More research for sure. Promising ideas!
I think the best thing for thermal insulation and passive heating/cooling are rooftop gardens and vertical vegetation, that keep you cool during summer by dispersing humidity, and insulated during winter
So my thoughts recently have been to build a solar array as a roof to a carport like structure. If I choose to not go with tracking i thought of mounting biracial panels on a box like structure. May space them with strips of surrounding glass. The inside box, say about 30cm (1 foot deep) could be painted with this paint for back reflection to panels. Insulated ducts coming from ground loop air system could provide ground temp air to cool panels when needed, thus keeping efficiency up and panel degradation down. It would of course also provide ground temp air in winter to melt snow cover. While some of efficiency increase would be consumed by blower fan, there is still the extended life of panels.
How much of heat absorbed from sun light is caused by visible light and how much of it is caused by other infrared and uv waves ?
Peak emissions from the sun are in visible wavelengths. This is why we evolved to see visible light, that is where most of the energy is. And this is also why the sun looks white when not filtered by the atmosphere.
@zawilious good to see someone missed that glaring issue in this video. The sun's heat is made up of 3% UV, 44% visual (reflecting light) and 53% infrared. In the end this ignores completely the IR heat and this paint would be glaring for neighbours. I've not been able to find any testing data to the claims. Interesting Barium Sulphate would need to be very thick so keeping the quality of performance will be a challenge. If the paint gets dirty on a roof it will reduce performance as well. In the end its another white light reflective paint.
(Before seeing the video even) yup, for the two months before it needs to be cleaned maybe. (After) it does seem pretty cool though!
I was involved in noni-particle paint Uni of Technology Sydney in 2010.
Hey Ricky, I live in the Caribbean, and this sounds very interesting to me. Here it's hot all year round, so this ultra-white paint could definitely help!
Oooooh man. Now I know what paint to use in a grow room 😆
I love that idea! It really ma sense!
Some solar panels can absorb reflected sunlight on the back side of the panel as these panels are semi translucent. So if you paint your roof with this paint that reflects in the IR and shorter wavelength part of the spectrum and have solar panels on your roof, do you get the best of both worlds? In other words the panels make electricity on the front of the panels and the house roof remains cool, and the reflected solar from the white coating adds to more efficiency of the solar panels? I would think having the panels with gaps between them and elevated say 6 inches (15 cms) would keep the IR radiation temperature gain from the panels absorbing solar radiation from heating the backside of the panels. This would also keep snow from building up. Another trick is to paint the last foot of the roof eve a brown color so the ice doesn't build up on the edge of the roof. Snow is really a slow moving fluid on the roof and with a steep enough angle will move to the edge and be melted by the brown paint. The last part of the roof can have a short panel of the metal roof and a rubber insulating layer sandwich so heat is not transferred to the underlying roof. Just a thought...
My baby done left my Lily pad, my legs were both deep fried. I got the Blues, err Greens... Two Bit da Vinci covers the world of physics. Great stuff.
For me its kind of like the x files. I want to believe, but ive seen so many energy conservation scams and failures that i will remain skeptical until this is proven in real world conditions.
you can test it for yourself in real world. paint piece of metal with white color, second piece with black.. there will be significiant difference
In the world of sound waves, spaces are modified by absorbers and diffusers. Diffusers reflect sound at varying angles. This paint is a light diffuser.
Dang this stuff is cool! 😅
PS. we should shift to white roads after we're done with roofs
Why don’t we just go and blind EVERYONE.
Hmm, This definitely sounds too good to be true!
Also if reflecting light was all you needed to do you could use mirrors or silver color whci are even more reflective!
I need this paint to put it on top of my 5th wheel camper. The metal roof it has heats way the camper faster than my AC can cool it off .
I'm amazed they didn't spray this in the metal Boxes they mount the Solar Cells in.
What about aluminum radiant barrier for home use. Even apply to exterior walls if putting on vinyl siding.
Can it be combine witht he skycool technology for a more aggressive effect?
Happy trees 🎄
Impressive, I'd love to do this to my house in SC but the HOA would never allow it. On my next house I plan to have a solar roof so that wouldn't be an option.
Hopefully the price will be good, maybe you'll need a solution to flip the color in places with seasons
But most homes are starting to build with insulated roofs and walls. Metal use an air gap. So the cooling effect won't go through anyways. But maybe for old homes.
An insulation cannot stop the transfer of heat, only reduce it. The transfer of energy is liniar to the temperature difference between inside and outside. So while a drak roof might have a dT of 50-70K a white roof only has a dT of 10-20 reducing the heat transfer to the inside
@@fabianfeilcke7220 with enough insulation, which is basically the spot where the heat can slowly cool down before going further, it's probably cheaper to paint the roof than adding extra insulation with tech like this. I think I like the solar over a planted flat roof.
Is there good reason to think that this paint once dirty will be more effective than currently existing light neutral paints and shingles? Do they have a strategy to seal it better than other paints? Is there further reason to believe that HOAs will accept such roofs? Does this chemical compound produce fewer environmental concerns than typical paints? The effect on air quality concerns me. Bright white exterior walls seem counter-productive as well as more subject to fashion trends than roofs. Do we really want to reflect all that heat and glare onto nearby plants, animals, people, cars, and structures? In general however, I am in favor of lighter residential roofs from an aesthetic standpoint, depending on house style.
Interesting.
Good luck getting that past your HOA's
Another problem, all that reflected light off all the white surfaces will be blinding. All the bright light everywhere you look will require everyone to use dark sunglasses all the time and people that are light sensitive will need to move up to welding glasses or only travel in low-light/night.
Definitely has potential. Though 2/3 of this nation get very cold in the winter so will have limited application at first.
You certainly do NOT want that if you have to heat in the winter.
regular 100% silicone roof coating achieves similar effect ( 98% reflected and high thermal emissivity).
I seen one gallon of paint with 1 oz of microcrystalline borite spheres added have a thermal resistance of r-24 with just one coat in 115 degree heat a painted vinyl siding was 72 degrees I'm certain without a doubt that Starlite was actually someone else's way before he brought it up. Without a last or first name the person I refer to is nicknamed Pops.
Where to buy
Try it in Houston, where solar heat gain is not the problem
You clearly have not seen my legs in the winter, I'll see myself out. :)
Hah! 😂
have you hear of the white houses in the little village in andalucie in spain? the most are white or blue/white the reflexion is incredeble
Check your numbers the average home hvac system is much higher but than you quoted . I like the progress of paint technology thanks for all your hard work
So is this paint available on the market now
How about also using paint on interior walls that absorbs light, and allows walls to illuminate rooms.
Wall curtains would allow for adjusting the amt of light in the room.
Can you do a video on vapor carburetors
Putin's chest 🤣🤣🤣. I wasn't going there but since you did ..... that paint so white it makes Betty White look like James Brown.
What happens to the reflectance of this white paint when it gets dirty - you know a week after its been applied?
It works! Plus our house never gets pulled over
Would there be a downside to using a large amount of the main ingredient?
10:05 well just add little bit more thermal insulation to compensate the lost heat.
Then you wouldn’t need the special paint
This most excellent paint increases heating costs in colder climates and seems more suited to regions that heat their homes mildly or not at all.
Yes. This sounds nice for Arizona, if it can maintain its quality and color despite dust storms. This doesn't sound so great for Canada.
OMG if you could get this paint on fabric you could have ultra white clothing to keep you cool in hot areas. I love this.
Even without this amazing paint, we'd do well to paint all of our houses and infrastructure white, or make them out of materials that are naturally white.
Even if you live north.
What's the upkeep for this? How often do you have to wash it and keep it clean to work at max efficiency? I'm sure dirt and dust will affect it quite a bit.
How hard is it to keep your existing home it's original color?
Could also start building with photo papier-mâché based. Locks and panels.
In related news, I accomplished the same thing by spreading out all my old AOL CDs on my roof.
what makes air conditioning not needed is good house design and siteing!!!!
So if the buildings do not absorb heat, it will stay in the air. Is this a good idea, or not?
Have a black roof. Absorb the heat with water, and use the hot water for heating at night.
This paint will be good for regions where there is no winter season, like tropical & desert areas.
i thought i saw a story about this with the researchers who were from Stanford University.
There's no silver bullet to energy efficiency, so we need solutions like this to develop the portfolio of options.
Every little bit helps.