Why Skylights Let in Up to 6 Times More Light Than Windows

When considering which type of lighting to use in a home or building, roof skylights often stand out as a natural lighting option. But what makes skylights so much more effective than traditional vertical windows? Let's examine the key reasons behind this impressive supply of light.

The Angle of Light

One of the primary advantages of skylights is their strategic positioning on the roof. Unlike vertical windows, which may be obstructed by overhangs, eaves, or neighboring structures, skylights capture direct sunlight from above. This positioning allows them to tap into a much larger portion of the sky, especially during midday when the sun is at its highest point.

Expanded Surface Area

Another critical factor is the surface area of skylights. They are typically larger than standard windows, providing a greater opening for light to enter. This results in a higher volume of light passing through, especially if the skylight is designed to be expansive.

Reduced Obstructions

Skylights tend to be less obstructed by trees, buildings, or other landscape features. Since they are positioned higher on the roof, they are naturally positioned to capture as much unobstructed light as possible. This makes a significant difference in the amount of natural light entering a space.

Light Diffusion and Even Distribution

Skylights are often designed to spread light evenly throughout the room. Many modern skylights incorporate materials that diffuse light, creating a brighter, more evenly lit space. This can be particularly beneficial for illuminating large areas or accomplishing daylight harvesting strategies.

Unique Light Absorption and Refraction

Another reason for skylights' effectiveness is related to the angle at which light enters. Skylights usually receive light at around 90 degrees, which minimizes refraction and reduces light loss. In contrast, vertical windows may reflect light off surfaces, which can reduce the overall brightness and efficiency of the light that enters the space.

Conclusion

While it's accurate to say that skylights can let in significantly more light, the "6 times" claim may be a bit of an exaggeration. The real reason skylights perform so well is due to their ability to capture light more efficiently and distribute it evenly across larger areas. Understanding these factors can help you make an informed decision when choosing the best lighting for your home or building.