Product information
07/2027
Weather resistant coating resins “ZEFFLE” for heat-shielding coatings
Roofs are exposed to intense UV radiation, rain, and airborne chemicals, and the coating film is often required to maintain performance and appearance over a long period of time. Heat-shielding coatings help suppress the temperature rise of building rooftops caused by solar radiation, contributing to heat stress mitigation and energy savings.
Weather resistant coating resins ZEFFLE is suitable for heat-shielding roof coatings that require both long-term weatherability and high reflectance. By maintaining coating integrity and aesthetics over time, ZEFFLE supports stable heat-shielding performance and helps reduce life-cycle costs.
Benefits of heat-shielding roof coatings (features & advantages)
Applying heat-shielding coatings to rooftops - depending on the building’s usage and structure - can significantly reduce cooling load during the summer months. The attributes of heat-shielding coatings are beneficial for heat mitigation resulting in increased energy savings.
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Fig. 1 Comparison of heat-shielding performance (image)
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Reflects approx. 90% of sunlight
Heat-shielding roof coatings efficiently reflect solar radiation, helping suppress rooftop surface temperature rise. This greatly reduces the impact of radiant heat and contributes to lowering indoor thermal load. -
Improved air-conditioning efficiency and reduced electricity consumption
By suppressing temperature increase across the entire rooftop surface, the burden on air-conditioning equipment decreases. This can reduce energy used for cooling and, as a result, help lower summer electricity costs. -
Improved indoor environment
By reducing heat buildup under the roof, heat-shielding roof coatings can improve working and education environments in hot conditions. They can be effective for facilities where installing air-conditioning equipment is difficult. -
Contribution to CO₂ reduction
Lower energy consumption can reduce CO₂ emissions, supporting climate protection efforts and potentially contributing to carbon credit creation. -
Use of support programs (subsidies)
In some cases, support programs for installing air-conditioning equipment (e.g., special subsidies for temporary air-conditioning installation) may also cover heat-shielding roof coating work-such as for public school gymnasiums. Heat-shielding roof coatings are attracting attention as a heat countermeasure with an excellent balance of cost and effectiveness.
Key advantages of heat-shielding coatings using ZEFFLE
By adopting Daikin’s fluoropolymer resin ZEFFLE in heat-shielding coatings, it becomes possible to design coatings that keep heat-shielding performance “working longer.” Below are two points that are unique to ZEFFLE.
Fig. 2 Features of ZEFFLE
1) Long-term retention of heat-shielding performance
Roofs are often said to receive roughly twice the UV exposure compared with walls, which makes the environment especially harsh. In addition, white pigments (titanium dioxide) used to increase reflectance can be susceptible to UV influence and may accelerate coating degradation.
ZEFFLE leverages the inherent durability of fluoropolymer resins, even for high-reflectance coatings using white pigments, by sustaining heat-shielding performance over extended periods.
This contributes to:
- Stable coating appearance and reflectance over time
- Reduced repainting frequency and lower life-cycle cost
2) Excellent chemical resistance for harsh environments
In environments such as factories and plants - where roofs and exterior walls can be exposed to airborne chemicals and chemical agents - chemical resistance becomes a critical requirement.
- Heat-shielding coatings using ZEFFLE demonstrate superior durability against chemical degradation caused by exhaust gases and similar factors.
- Even in chemically demanding areas such as around chemical tanks, the coating film delivers long-lasting protective performance.
Fig 3. Coating track record of ZEFFLE-based heat-shielding roof coatings (example)
Recommended applications (examples)
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Heat-shielding coatings using ZEFFLE can be effective across a wide range of buildings and equipment. Typical examples include:
Fig 4. example applications of ZEFFLE heat-whielding coatings (image)
Metal standing-seam roofs
On metal standing-seam roofs, applying heat-shielding coatings reflects heat at the roof surface and helps reduce radiant heat transmitted into the building interior.
Concrete roofs
Concrete has high heat storage. The roof absorbs heat during the day and releases it at night, which can prolong the sensation of heat. Heat-shielding roof coatings can suppress rooftop heat accumulation and help reduce the indoor thermal load.
Under-roof spaces / factory work environments
By reducing radiant heat transferred into indoor spaces, heat-shielding roof coatings can help improve harsh work environments in summer.
Facilities where shutters are frequently opened for loading/unloading may struggle to maintain air-conditioning. Coating the roof with heat-shielding paint can help mitigate heat intrusion from the ceiling side and contribute to temperature management and energy savings.
Tank storage (flammables / chemicals)
By suppressing temperature rise, heat-shielding roof coatings may help reduce temperature increase of contents and suppress evaporation of fuels/solvents (e.g., paper loss, chemical loss) thus contributing to improved storage stability.
Control panels and electronic equipment installed outdoors
Outdoor control panels and electronic devices may suffer from internal temperature rise under direct sunlight, leading to malfunction or failure. Heat-shielding roof coatings can help suppress internal temperature rise and support stable operation.
Fig 5. Control panel example in high-temperature regions (image)
Heat-shielding roof coatings help suppress malfunction and failure due to internal temperature rise, contributing to stable equipment operation.
In closing
Daikin’s weather resistant fluoropolymer resin ZEFFLE offers:
- Long-lasting heat-shielding performance while maintaining appearance and solar reflectance
- High resistance to UV radiation, chemicals, and airborne pollutants
ZEFFLE is a resin that meets the demanding requirements of heat-shielding roof coatings and is expected to expand into various application fields.
If you are considering heat-shielding roof coatings for heat mitigation, energy savings, or stable equipment operation, please consider coating designs utilizing ZEFFLE.
Please feel free to contact us with any questions or sample requests.
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ZEFFLE Series are designed to meet building and constructions most strict outdoor specifications.
