I have white roof in hot florida and it reduced attic temps from 150F to max.100F,so that 50F degrees different makes a lot and the house is significantly cooler !! It has not only 2 benefits but many !!! White roof is #1 project in hot climates which will do more than you think 1.House is more comfortable (cooler). 2.Energy bill is down significantly. 3.Your roof lasts longer ( not 20 years,but 30 +). 4. It withstands hurricanes winds. 5. No more quartz from shingles falling to my pool and gutters. 5. It reflects light,so my solar systems works more efficiently and are not exposed to so much heat. 6. I can work on the roof all day long if I want to and not get my feet burned,the same applies inside attic. 7. Ductwork in the now "cool" attic delivers the conditioned air much cooler to the rooms and it works shorter time. Sooo be smart and keep the heat out,instead of fighting it with monster A/C units !!! White roof rocks and let your neighbor be at his owen house if he is picking on you about white roof..Stay Cool..
@@JoaoAmadoTV Re Hurricanes, I've no idea what they mean. But Re Solar panels - they work more efficiently if they do not get too hot. I assume this person's panels are mounted on the roof - in which case a white roof would allow your panels to stay cooler and hence make more electricity.
In 2008 I painted my conventional asphalt shingle pitched roof with elastomeric white roof paint (Home Depot: Henry brand; Lowes: Black Jack brand) using a 9" conventional paint roller on a stick and no primer. (The shingles were several years old in 2008. Don't paint without a primer first on new shingles less than 30 days old.) Am very pleased with the results. It cures leaks even before they start and cost 1/3 to 1/4 as much as a reshingle. Nine years later, it shows very little wear. It's immune from all but the most severe hailstorms, unlike unpainted asphalt shingles. It saves on cooling costs. Don't like white? Paint over the white roof paint with any exterior grade paint, in the same color as your shingles if you want. I painted the drip lip at the edge of the shingles too, with a paint brush, so precipitation touches nothing but roof paint until it hits the ground.
Look at Australian coastal residential areas and it's a sea of almost charcoal black and dark brown roofs. Even local councils have forbidden home owners from painting their roof white citing aesthetics. But it's no good just painting the roof white for so many homes are now rendered and painted in dark colours so those wall that face the sun's rays heat up and then radiate that heat into the home. Overseas in hot countries they have white walls and white roofs and you can easily see how cool it is by touching the surface of a white car compared to a black car. In 40+ degree heat a white car is warm whereas a black car is scorching hot and it's the same for you home. It's always been this way long before climate change was even a buzz word.
Thank you for sharing the research and insight. I have a doubt for my research that it would be nice if you could help. You say that white roofs are better to reflect heat, and quoting the video " it's a no brainer" But when you use solar panels, such as the ones in the video on top of the white roof, doesn't that defies the purpose ? I'm researching in to cooling solar panels, and would appreciate your help. How to achieve the goal of your study and all advantages that it has, using solar panels in all the roof ?
Do your neighbours white walls dazzle you? It's odd that you think the roof is anymore bothersome for glare than the many other white painted surfaces in your built environment, when they occupy the plane least likely to present itself in your field of vision.
Today I am painting Asianpaints Tileguard White stain paint 2coats on old red Clay Roof Tiles, let's see the change in temp (lookwise not good, loc: South India).
Do you have any updates? Do you feel any noticeable change in temperature reduction ? I'm leaning towards Asian paints damp proof paint because it's much thicker.
Forget climate change then, Aussie summer has always been fkn hot. Having a dark roof is stupid. Light coloured walls and roof make sense in a hot climate.
@@JoaoAmadoTV It is for scientists in Australia can't get any funding for the project they're working on unless it includes the two key words "climate change". Even if the project they're working on has nothing to do with climate change for if they don't includes those tow key words then they don't get any funding.
Yes and our climate has ALWAYS been hot in summer and yet when a mate built his house the local council told him it had to be dark bricks with a dark coloured roof for (get this) "aesthetic reasons". But then again most council inspectors are a bunch of self important idiots.
I have white roof in hot florida and it reduced attic temps from 150F to max.100F,so that 50F degrees different makes a lot and the house is significantly cooler !! It has not only 2 benefits but many !!! White roof is #1 project in hot climates which will do more than you think 1.House is more comfortable (cooler). 2.Energy bill is down significantly. 3.Your roof lasts longer ( not 20 years,but 30 +). 4. It withstands hurricanes winds. 5. No more quartz from shingles falling to my pool and gutters. 5. It reflects light,so my solar systems works more efficiently and are not exposed to so much heat. 6. I can work on the roof all day long if I want to and not get my feet burned,the same applies inside attic. 7. Ductwork in the now "cool" attic delivers the conditioned air much cooler to the rooms and it works shorter time. Sooo be smart and keep the heat out,instead of fighting it with monster A/C units !!! White roof rocks and let your neighbor be at his owen house if he is picking on you about white roof..Stay Cool..
@MD031, could you elaborate the practical advantages on point 4 regarding hurricanes, and point 5 regarding the solar panels ? please
@@JoaoAmadoTV Re Hurricanes, I've no idea what they mean. But Re Solar panels - they work more efficiently if they do not get too hot. I assume this person's panels are mounted on the roof - in which case a white roof would allow your panels to stay cooler and hence make more electricity.
In 2008 I painted my conventional asphalt shingle pitched roof with elastomeric white roof paint (Home Depot: Henry brand; Lowes: Black Jack brand) using a 9" conventional paint roller on a stick and no primer. (The shingles were several years old in 2008. Don't paint without a primer first on new shingles less than 30 days old.) Am very pleased with the results. It cures leaks even before they start and cost 1/3 to 1/4 as much as a reshingle. Nine years later, it shows very little wear. It's immune from all but the most severe hailstorms, unlike unpainted asphalt shingles. It saves on cooling costs. Don't like white? Paint over the white roof paint with any exterior grade paint, in the same color as your shingles if you want. I painted the drip lip at the edge of the shingles too, with a paint brush, so precipitation touches nothing but roof paint until it hits the ground.
why is this not done everywhere?
They're just figuring this out now?
Look at Australian coastal residential areas and it's a sea of almost charcoal black and dark brown roofs. Even local councils have forbidden home owners from painting their roof white citing aesthetics. But it's no good just painting the roof white for so many homes are now rendered and painted in dark colours so those wall that face the sun's rays heat up and then radiate that heat into the home. Overseas in hot countries they have white walls and white roofs and you can easily see how cool it is by touching the surface of a white car compared to a black car. In 40+ degree heat a white car is warm whereas a black car is scorching hot and it's the same for you home. It's always been this way long before climate change was even a buzz word.
Thank you for sharing the research and insight.
I have a doubt for my research that it would be nice if you could help.
You say that white roofs are better to reflect heat, and quoting the video " it's a no brainer"
But when you use solar panels, such as the ones in the video on top of the white roof, doesn't that defies the purpose ?
I'm researching in to cooling solar panels, and would appreciate your help.
How to achieve the goal of your study and all advantages that it has, using solar panels in all the roof ?
Do your neighbours white walls dazzle you? It's odd that you think the roof is anymore bothersome for glare than the many other white painted surfaces in your built environment, when they occupy the plane least likely to present itself in your field of vision.
Today I am painting Asianpaints Tileguard White stain paint 2coats on old red Clay Roof Tiles, let's see the change in temp (lookwise not good, loc: South India).
Do you have any updates? Do you feel any noticeable change in temperature reduction ?
I'm leaning towards Asian paints damp proof paint because it's much thicker.
Why don’t they tell us something we don’t know
Im from AGDAM
I'm from WAKANDA
4 degress.... woo hoo
You losr me on climate change
me too, i wonder if it's just a nice key word to fill in ...
Forget climate change then, Aussie summer has always been fkn hot. Having a dark roof is stupid. Light coloured walls and roof make sense in a hot climate.
@@JoaoAmadoTV It is for scientists in Australia can't get any funding for the project they're working on unless it includes the two key words "climate change". Even if the project they're working on has nothing to do with climate change for if they don't includes those tow key words then they don't get any funding.
Yes and our climate has ALWAYS been hot in summer and yet when a mate built his house the local council told him it had to be dark bricks with a dark coloured roof for (get this) "aesthetic reasons". But then again most council inspectors are a bunch of self important idiots.