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ROOF SURFACE TEMPERATURES
A Berkeley Lab study compared two Fresno homes for a year; the reflective tile roof ran 13.8°C cooler on a summer day, cut cooling electricity by 26%, and peak demand by 37%- AT&T painted two Nevada telecom roofs white; roof surfaces cooled 35–40°F, reached 12°F below outdoor air, and two buildings saved about 0.5 kWh of electricity a day
- A Fresno home replaced dark asphalt shingles with reflective concrete roof tiles; a Lawrence Berkeley study reported 26% lower annual cooling energy use and 37% lower peak-hour demand
- In 1991, researchers coated a Merritt Island home’s green-gray shingle roof with reflective material; the shingles reached about 110°F after treatmentDark roofs tend to soak up heat from the sun, resulting in higher air conditioning demands and costs. Utilizing reflective roofing material...07 Sep, 2026, 01.10 PM IST
- In St. Paul, Penfield added a vegetated roof over a conventional membrane; monitoring found the green-roof membrane peaked about 51°F cooler than the conventional roofResearch reveals that green roofs maintain lower temperatures compared to conventional roofs, leading to significant reductions in cooling ...07 Sep, 2026, 01.00 PM IST
- Irvine coated a half-mile stretch of two connected streets with cool pavement; August and September measurements found the treated asphalt ran about 7-10°F coolerCities worldwide are turning to cool pavement technologies to tackle urban heat. In Irvine, California, treated roads have experienced a re...06 Sep, 2026, 01.10 PM IST
- Since 2016, San Antonio has replaced dark roofs on low-income homes with reflective shingles; the program was linked to lower attic temperatures and electricity useSan Antonio has launched an innovative project to replace traditional dark roofs with energy-efficient reflective roofing. This initiative ...06 Sep, 2026, 12.39 PM IST
- In 1996, Florida researchers whitened 7 shops in a Cocoa strip mall; roof surfaces fell by as much as 70°F, cooling energy dropped 25.3%, and peak demand dropped 40.3%In an innovative Florida trial, it was found that white roofs significantly decreased heat levels and energy usage. Traditionally, unpainte...06 Sep, 2026, 12.30 PM IST
- In 2001, researchers tested a white roof on a large Austin retail store; the study reported lower roof temperatures and an 11% reduction in cooling energy useA 2001 study in Austin demonstrated that white roofs lowered building temperatures significantly. This change reduced air conditioning ener...05 Sep, 2026, 01.40 PM IST
- In 2018, a University of Hawaii study compared green and white roofs in Honolulu; the green roof was reported to have lower peak temperatures at the surface and nearby airA University of Hawaii graduate student tested green roofs against white ones. The green roof proved significantly cooler than the adjacent...04 Sep, 2026, 02.00 PM IST
- In 2023, Princeton researchers tested a naturally ventilated cooling box; it stayed below outdoor air while using radiative cooling and buoyancy-driven airflowResearchers have unveiled a groundbreaking cooling technique designed for buildings that eliminates the need for traditional air conditioni...03 Sep, 2026, 02.32 PM IST
- In 2025, Monash researchers developed a self-adaptive microporous ceramic; daytime cooling reached 19.5°C below ambient while nighttime overcooling was limited to 3.3°CScientists have unveiled an innovative ceramic designed for passive radiative cooling applications. This advanced material efficiently lowe...02 Sep, 2026, 02.40 PM IST
- In 2023, CUHK researchers milled glass bubbles for 5 minutes before mixing cooling paint; solar reflectivity rose from 75.8% to 95.8% during field tests at noonInnovative researchers have unveiled a groundbreaking paint designed for energy-free cooling in buildings. By incorporating larger glass bu...02 Sep, 2026, 02.20 PM IST
- In 1995, Florida researchers coated a Cocoa Beach school roof white; over the following year, chiller energy use fell 10%, saving 13,000 kWh, while peak demand fell 35%A study conducted in Florida revealed that white roofs can drastically lower cooling costs, marking a significant achievement in the realm ...01 Sep, 2026, 07.30 PM IST
- City University of Hong Kong built a radiative-cooling ceramic tile reflecting 99.6% of sunlight; field tests found it about 5°C cooler than standard tilesResearchers developed a new ceramic tile inspired by beetles. This tile reflects 99.6% of sunlight and releases absorbed heat effectively. ...01 Sep, 2026, 06.50 PM IST
- In 2020, Stanford's radiative cooling technology reached a California supermarket roof; panels were estimated to save 15% to 20% energy, while a Tempe bus shelter film was reported 30°F coolerNew technology allows surfaces to cool themselves under direct sunlight. This innovation reflects sunlight and radiates heat into outer spa...31 Aug, 2026, 06.40 PM IST
- Phoenix swapped black asphalt for a reflective road coating; noon surface heat fell 12°F, but pedestrians faced higher radiant heatIn an effort to lower urban heat, Phoenix tested innovative reflective pavement coatings on its roads, revealing that treated asphalt kept ...31 Aug, 2026, 05.22 PM IST
- In 2017, CU Boulder engineers turned glass microspheres into a 50-microliter film; 10 to 20 square meters of it could help cool a family-sized houseA team of researchers has developed a groundbreaking thin film that cools surfaces without the need for electricity or water. By employing ...26 Aug, 2026, 02.10 PM IST
- Argonne modeled Chicago’s August 2021 heatwave with different roof types; white roofs lowered air temperature by nearly 2°C and cooling energy use by 16.6%Transforming the rooftops of Chicago into cooler surfaces has led to a notable reduction in city temperatures. The use of white cool roofs ...25 Aug, 2026, 06.40 PM IST
- Illinois researchers tested a passive cooling film in Houston; treated metal roofs measured more than 40°F cooler in direct sunlightAs American summers heat up, public health risks escalate, prompting researchers to create an innovative coating that cools metal roofs by ...25 Aug, 2026, 02.40 PM IST
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