What Color Reflects The Most Sunlight?
Question: I have heard the color of my roof can actually
determine how heat is absorbed. What color reflects the most sunlight?
Answer: The color white reflects the most sunlight in the spectrum of colors, while on the other end black absorbs the most sunlight. So does this mean painting my roof white (versus black) will actually make a difference in the interior temperature of my house? You bet it does.
Roof paint is now a readily available item in hardware stores, and it comes in a wide variety of colors. Some roof paints even include a metallic component that reflects additional sunlight.
Painting your roof with white roof paint also helps fight the battle
against global warming. A cooler home means less energy consumption
during the hot months of the year. This translates into less coal, gas
or oil emissions by your utility company.
Rooftops do not collectively make up a large percentage of the earth’s surface; however, households do make up a large percentage of the need for energy, which produces dangerous emissions that are hazardous to our environment.
Recent estimates have shown that painting a home or building’s roof white can save up to 20% on energy costs. The initial investment to paint your roof white is negligible compared to the savings, and you can recoup your startup costs quickly with the savings you will see each month.
Is white the only color available? No, actually many colors along the color spectrum (including black) are available as roof paint. Even if you are stuck on the color black, painting your roof black with roof paint will still provide more reflection that the traditional roof tiles you have now.
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