Passively Cool Your Buildings without Relying on Energy
Backed by Science
Around the world, cities are struggling to combat both a heat crisis and rising energy costs. For the past two years, our engineers have been perfecting a passive cooling technology that can keep a structure cool without relying on energy dependent cooling systems. Pirta products reflect solar heat away from a surface and allow that surface to lose more heat than it absorbs from the sun, and they do so more effectively than any other product on the market.
| Material | Solar Reflective Index (SRI) |
|---|---|
| Pirta | 117.66 |
| Standard White Paint | 100 |
| White coating on metal roof | 82 |
| Light gravel on built up roof | 37 |
| Grey Asphalt Shingle | 22 |
| Solid Black Paint | 0 |
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Virtually anything you can paint. You can cool with Pirta®.
Off-grid Farming
Construction Offices
Cryogenic Storage
Commercial Roofs
Electrical Transformers
Shipping Containers
Decrease the temperature 3°F cooler than being in shade… In full sun… No electricity required.
MAXIMUM DECREASE IN SURFACE TEMPERATURE AS COMPARED TO:
64 °C / 115.3 °F
BLACK SURFACE
10 °C / 17 °F
WHITE SURFACE
117.66
SOLAR REFLECTIVE INDEX (SRI) AS MEASURED BY ASTM E 1980
+
Amazon and Pirta have partnered to accelerate the development of sustainability solutions throughout Amazon, thereby fostering a collaborative ecosystem where cutting-edge ideas can thrive, ultimately contributing to a more sustainable future.
"We are excited to put a Pirta product into play on a large scale and are looking to add more factories and warehouses in the future. These are the places where Pirta paint can make a significant difference for people and the planet.”
Rob Atkin, CEO of Pirta
Highest Commercially Available Solar Reflectant Paint in the World
The Solar Reflectance Index (SRI) is a measure of a material's ability to reflect solar heat and emit absorbed heat. It integrates both solar reflectance and thermal emissivity into a single number, making it an essential tool for evaluating the cooling performance of building materials, particularly in urban environments.
Pirta offers the highest commercially available solar reflectant paint in the world.
| Material | Solar Reflective Index (SRI) |
|---|---|
| Pirta | 117.66 |
| Standard White Paint | 100 |
| White coating on metal roof | 82 |
| Light gravel on built up roof | 37 |
| Grey Asphalt Shingle | 22 |
| Solid Black Paint | 0 |
Book an Appointment to Learn More
Backed by Science
Around the world, cities are struggling to combat both a heat crisis and rising energy costs. For the past two years, our engineers have been perfecting a passive cooling technology that can keep a structure cool without relying on energy dependent cooling systems. Pirta products reflect solar heat away from a surface and allow that surface to lose more heat than it absorbs from the sun, and they do so more effectively than any other product on the market.
Partners & Accreditations
Learn More About Passive Cooling Technology
Passive cooling is a vital strategy for reducing energy consumption in buildings, improving thermal comfort and decreasing dependence on air conditioning systems. This comprehensive guide focuses on understanding how passive cooling works, the relationship between solar reflectance, emissivity and the Solar Reflectance Index (SRI), and how these metrics relate to the effectiveness of cooling systems. A particular focus will be on Passive Daytime Radiative Cooling (PDRC), which is gaining attention for its potential to cool surfaces below ambient temperatures.