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Radi-Cool™ Transparent Exterior Film Skylight

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SKU: T13300W Categories: ,

Introducing our premier cooling solution – the ultimate choice for spaces exposed to intense afternoon sun. Tailored for skylights or windows, this film, our darkest and coolest, boasts a shading coefficient of 0.17 and rejects over 99% of harmful UV radiation and reflects 65% of incoming light. Combined, this film rejects 85% of total solar energy.

Key Features:

  • Shading Coefficient: An exceptional 0.17, making it the ideal choice for areas receiving direct afternoon sunlight.
  • UV Radiation Rejection: Over 99% rejection of harmful ultraviolet radiation, ensuring comprehensive protection.
  • Light Reflection: A remarkable 65% light reflection, providing effective shading and a cooler interior.
  • Atmospheric Window Emissivity: With an emissivity of 84%, this film actively cools, delivering an impressive 12.3 watts/ft² (131 watts/m²) of cooling power.
  • Privacy and Aesthetics: The silvery finish not only provides privacy but also enhances the cooling and light-rejecting capabilities.
  • Application Recommendation: We recommend applying this film to the exterior surface of glass wherever cooling is desired, especially for challenging locations. Alternatively, explore our reflective, heat-blocking interior films.

Unique Advantage:

What sets this film apart is its transparency combined with the ability to actively cool through radiative cooling in the atmospheric window. In a pilot study conducted in Singapore, a glass-roofed house equipped with this film experienced an impressive temperature reduction of up to 11°F (~6°C), with an average temperature decrease of 7°F (~4°C).

Elevate your space with our cutting-edge cooling solution – a transparent window film that not only blocks heat but actively cools, ensuring a comfortable and private environment even in the most challenging conditions.


Outer Surface



Shading Coefficient


Visible Light Transmittance


Visible Light Reflected


Ultraviolet Light Rejected


Total Solar Energy Rejection (TSER)


Atmospheric Window Emissivity


Cooling Power

12.3 watts/ft² (131 watts/m²)


0.02mm (adhesive) + 0.06mm (film)


98.5' (30m)


5' (1.520m)


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