May 19, 2022

According to the lead researcher behind the whitest paint ever created, the highly reflecting paint is scheduled to be sold to the general public, and will one day be able to cool homes simply by painted roofs.

The paint, which has been recognized by the Guinness World Records book, has made headlines worldwide. According to the experts who developed it, it is intended to minimize or eliminate air conditioning eventually.

Indeed, 98.1 percent of solar light is reflected by the paint, which also emits infrared heat.

Due to the fact that the paint absorbs less heat from the sun than it emits, it cools a surface coated with it below the ambient temperature without expending any energy.

The researchers expect that the paint will eventually be available for purchase from major stores.

“Yes, the paint is intended to be used on roofs, including roofing shingles and metal roofs,” Ruan said. “It can be used on other infrastructures where commercial paints are used.”

The paint is found to be beneficial in both cool and warm climates.

“From the standpoint of saving energy, it will be more useful in warm climates since cooling is needed more. On the other hand, to help reverse the global warming trend, it can be used in both warm and cold climates. For example, using it in the Arctic and Antarctic areas (say, on their roofs) should help cool down the areas and prevent glaciers from melting,” Ruan explained.

The typical commercial paint warms up rather than cools down. On the market, heat-reflecting paints reflect only about 80% to 90% of sunlight and cannot keep surfaces cooler than their surroundings.

According to Purdue University, this paint is ultra-white due to two factors: a high concentration of a chemical substance called barium sulfate – which is also used in photo paper and cosmetics – and varied particle sizes of barium sulfate in the paint.

According to a university news release, Purdue developed this white paint due to research dating all the way back to the 1970s to produce radiative cooling paint as a viable alternative to regular air conditioners.