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Reflective Aluminum for Tubular Skylights and Daylighting Systems
Daylight – delivered
farther‚ brighter‚
with truer color
3M™ Specular Film on Metal is better than reflective aluminum for tubular skylights and tubular daylighting systems

Higher specular reflectivity delivers maximum daylight through tubular skylights and daylighting systems.

3M™ Specular Film on Metal delivers more daylight‚ farther‚ with truer colors and superior aesthetics compared to enhanced silver coated reflective aluminum (ESA). The reason: it possesses more reflectivity‚ both total and — even more important — specular.



Specular reflectivity
is a measure of useful light‚ moving forward‚ through the daylight tube; 3M specular film on metal offers a greater than 2% higher specular reflectivity resulting in increased product performance in tubular skylights.


Total reflectivity
measures light that moves in all directions — including non-useful‚ back-scattered light.




A small amount of increased specular reflectivity yields greater performance in daylighting systems and tubular skylights.

Image comparing reflective aluminum transfer efficiency in tubular skylights and daylighting tubes

Delivers the same amount of daylight up to 250%* farther
The physics of light transfer efficiency (LTE) mean that even a seemingly small increase in specular reflectivity — even just 2% more — enables daylight to travel much farther down a tube with less light loss.

3M specular film on metal allows equal light levels to travel up to 250% farther versus silver coated reflective aluminum.

Based on a 10” diameter x 10’ in length daylight tube with an incidence sun angle of 25 degrees from the horizon.



Image comparing reflective aluminum daylight tubes for daylighting brightness in tubular skylights

Specular Light that’s Significantly Brighter:
3M specular film on metal has significantly superior daylight transfer efficiency (LTE) compared to enhanced silver coated reflective aluminum‚ resulting in much greater daylight output.

It’s literally a brighter idea‚ providing a 107% increase in daylight output down a 10’ long × 10” diameter daylight tube with an incidence sun angle of 25 degrees from the horizon.



Photo of the sun in a blue sky

Quality of Light that’s Truer:
Because 3M specular film on metal is a clear‚ colorless optical film‚ the quality of daylight it delivers is full visible spectrum; it reflects the color of sunlight from outside‚ resulting in truer‚ more natural colors inside.



There are many benefits to using 3M™ Specular Film on Metal in tubular skylights and daylighting systems.

By moving more and better daylight deeper within a building‚ 3M specular film on metal can help reduce lighting costs and increase occupant satisfaction. If you have questions or wish to speak to a representative‚ please call us at 1-888-650-3497 or contact us.


Energy EfficientReflective aluminum allows for efficient daylighting systems and tubular skylighting systems

Daylighting systems — using daylight from the sun — is the original green building practice that allows for up to 100% off-grid lighting during the day.

 
Flexible Design Flexibility for tubular skylights and daylighting systems

Because 3M™ Specular Film on Metal moves daylight farther with more brightness compared to enhanced silver coated reflective aluminum‚ it opens up many more interior spaces to the opportunities of daylighting.


Put light exactly where you want it.
Technical info and downloads
Design tip

While a bright workspace promotes productivity and enhances mood, glare can be a problem. To reduce glare, use multiple, low-wattage lighting sources rather than fewer, brighter fixtures, and use a 3M™ Sunlight Delivery System to create natural, ambient light during the day.

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