04/22/2025
🌎 Earth Day Food for Thought 🌍
💭 Have you ever considered cooling your property with... White Paint? 💭
Purdue University researchers have developed an ultra-white paint that reflects up to 98.1% of sunlight, making it the most reflective paint ever created. This innovation was driven by the goal of combating climate change by reducing the need for air conditioning and lowering energy consumption in buildings. Unlike traditional white paints, which typically reflect only 80–90% of sunlight and often absorb ultraviolet rays, Purdue’s paint uses barium sulfate particles of varying sizes to scatter and reflect nearly all incoming solar radiation. As a result, surfaces coated with this paint can remain up to 8°F cooler than the surrounding air during the day and as much as 19°F cooler at night.
For both residential and commercial buildings, choosing this ultra-white paint could significantly decrease cooling costs and help mitigate the urban heat island effect, where city environments become warmer due to heat-absorbing structures. By passively radiating heat away from surfaces, the paint offers a sustainable alternative to traditional air conditioning, with the potential for a 1,000-square-foot roof to provide cooling power equivalent to that of a typical home air conditioner. While the paint is still being developed for commercial availability, its adoption could play a meaningful role in improving energy efficiency and reducing greenhouse gas emissions, offering a practical step for property owners to support a healthier planet.
https://www.purdue.edu/newsroom/archive/releases/2021/Q2/the-whitest-paint-is-here-and-its-the-coolest.-literally..html #:~:text=The%20new%20whitest%20paint%20formulation,gets%20warmer%20rather%20than%20cooler.
In an effort to curb global warming, Purdue University engineers have created the whitest paint yet. Coating buildings with this paint may one day cool them off enough to reduce the need for air conditioning, the researchers say.
