# Passive Radiative Cooling Coating for Metal and Buildings Source: https://leadercoat.com/products/passive-radiative-cooling-coating/ Language: en Published: 2026-10-26T01:36:20.671Z Updated: 2026-10-26T01:36:20.671Z A white, water-based coating for reducing solar heat gain on suitable roofs, metal enclosures and building surfaces. It reflects incoming sunlight and emits heat as infrared radiation, providing a passive surface-cooling function without operating electricity. ![White pail of radiative cooling paint for metal surfaces](https://leadercoat.com/media/p37-white-pail-of-radiative-cooling-paint-for-metal-surfaces-u066.webp) ## Surfaces & applications Metal and concrete roofs; containers; grain silos; exterior walls; exposed building and industrial enclosure surfaces ## Passive cooling at the exposed surface Source section: https://leadercoat.com/products/passive-radiative-cooling-coating/#detail-1 The coating works by limiting solar heat absorption and radiating heat outward. It does not require electricity to perform this surface function. The effect on indoor temperature or energy use depends on roof construction, insulation, ventilation, climate and the operating pattern of the building. ![Coated and comparison airport jet-bridge roofs with infrared images](https://leadercoat.com/media/p37-coated-and-comparison-airport-jet-bridge-roofs-with-infrared-images-u062.webp) ## Match the system to metal or masonry Source section: https://leadercoat.com/products/passive-radiative-cooling-coating/#detail-2 Suitable projects include metal roofs, concrete roofs, containers, grain silos and external walls. Prepare and repair the substrate before coating. The illustrated system includes a sealing primer, cooling layer and weather-resistant topcoat. Steel in a corrosive environment may also need a compatible anti-corrosion primer. ## Understand the temperature comparisons Source section: https://leadercoat.com/products/passive-radiative-cooling-coating/#detail-3 The illustrated concrete-roof comparison reports a maximum surface-temperature difference of 20.7°C. An airport jet-bridge example reports 25.3°C between roof surfaces, with the coated surface 6.3°C below an ambient temperature of 19°C at 11:00 a.m. These are specific examples, not promised temperature reductions for every building. ## Preparation and recoat timing Source section: https://leadercoat.com/products/passive-radiative-cooling-coating/#detail-4 Clean the surface, remove dust and loose paint, and repair defects before application. Stir thoroughly. The illustrated method uses two or three coats, with surface drying in approximately 2–3 hours at room temperature and 24–36 hours before the next coat. Adjust the work schedule to the actual drying conditions. ## Plan a representative roof trial Source section: https://leadercoat.com/products/passive-radiative-cooling-coating/#detail-5 For a meaningful comparison, select similar adjacent surfaces with comparable exposure, construction and measurement times. Record ambient conditions, surface temperatures and coating condition. Evaluate the complete roof or enclosure requirement alongside cooling, including waterproofing and corrosion protection where needed. ## Product specifications | Property | Detail | | --- | --- | | Colour | White | | Coating type | Water-based passive radiative cooling coating | | Suitable projects | Metal and concrete roofs, containers, grain silos and exterior building surfaces | | Application | Brush, roller or spray as appropriate to the system | | Reference application | 2–3 coats | | Reference surface drying | 2–3 hours at room temperature | | Reference recoat interval | 24–36 hours | | Reported mid-infrared emissivity | Up to 95% in product information | | Reported roof comparison | 20.7°C maximum surface-temperature difference in the illustrated rooftop test | | Reported airport comparison | 25.3°C maximum roof-surface difference; coated surface 6.3°C below 19°C ambient at 11:00 a.m. | ## Application procedure 1. **Inspect and repair** Assess the roof or enclosure, repair defects and establish whether waterproofing or corrosion protection is also required. 2. **Prepare and prime** Clean and dry the substrate, remove loose coatings and apply the compatible primer required by the system. 3. **Apply the cooling system** Stir the coating and apply evenly. Follow the selected system and the reference recoat interval of 24–36 hours. 4. **Inspect and assess** Check continuity and finish. Compare temperatures under matched conditions after the coating has dried. ## Product & application gallery ![Containers of white passive radiative cooling coating](https://leadercoat.com/media/p37-containers-of-white-passive-radiative-cooling-coating-u059.webp) Containers of white passive radiative cooling coating ![Radiative cooling coating pail with product-performance illustration](https://leadercoat.com/media/p37-radiative-cooling-coating-pail-with-product-performance-illustration-u065.webp) Radiative cooling coating pail with product-performance illustration ![Coated roof test areas and an infrared surface-temperature comparison](https://leadercoat.com/media/p37-coated-roof-test-areas-and-an-infrared-surface-temperature-comparison-u064.webp) Coated roof test areas and an infrared surface-temperature comparison ![Cooling coating applications on containers, silos, roofs, walls and ships](https://leadercoat.com/media/p37-cooling-coating-applications-on-containers-silos-roofs-walls-and-ships-u063.webp) Cooling coating applications on containers, silos, roofs, walls and ships ![Coated and comparison airport jet-bridge roofs with infrared images](https://leadercoat.com/media/p37-coated-and-comparison-airport-jet-bridge-roofs-with-infrared-images-u062.webp) Coated and comparison airport jet-bridge roofs with infrared images ![Surface preparation, stirring and roller application of cooling coating](https://leadercoat.com/media/p37-surface-preparation-stirring-and-roller-application-of-cooling-coating-u061.webp) Surface preparation, stirring and roller application of cooling coating ![Cooling-material production equipment and processing-line collage](https://leadercoat.com/media/p37-cooling-material-production-equipment-and-processing-line-collage-u060.webp) Cooling-material production equipment and processing-line collage ![Radiative cooling coating comparison on shipping containers](https://leadercoat.com/media/p37-radiative-cooling-coating-comparison-on-shipping-containers-u058.webp) Radiative cooling coating comparison on shipping containers ![Primer, cooling coat and protective topcoat system diagram](https://leadercoat.com/media/p37-primer-cooling-coat-and-protective-topcoat-system-diagram-u057.webp) Primer, cooling coat and protective topcoat system diagram ![Building cooling illustration comparing coated and uncoated surfaces](https://leadercoat.com/media/p37-building-cooling-illustration-comparing-coated-and-uncoated-surfaces-u056.webp) Building cooling illustration comparing coated and uncoated surfaces ![Layered radiative cooling coating system and adhesion illustration](https://leadercoat.com/media/p37-layered-radiative-cooling-coating-system-and-adhesion-illustration-u055.webp) Layered radiative cooling coating system and adhesion illustration ## Samples and ordering Free samples are available; the customer pays freight. Order quantities depend on the product and pack format, with flexible starting quantities discussed with sales. Typical lead time is 10–20 days after order details are confirmed. OEM and private-label requirements can be discussed with the product specification. ## Frequently asked questions ### Does it consume electricity? The coating’s radiative cooling function is passive and does not consume operating electricity. ### Will every roof be 20°C cooler? No. The quoted measurements come from specific illustrated comparisons. Weather, substrate, film condition and measurement method affect the result. ### Can it replace every roof waterproofing system? Do not assume so. Select the complete roof system for its waterproofing, structural and corrosion requirements as well as cooling performance. ## Discuss this product Tell us your application, required format and quantity. We can help select a suitable sample and supply option. [Inquiry and samples](https://leadercoat.com/contact/)