Heat Reduction for Xenia Skylights
This project addresses concerns about harsh heat gain through residential skylights in Xenia, Ohio. Two skylights, covering approximately 16 square feet, were treated with Avery Dennison SP E-Lite 70 window film. The primary goal was to mitigate uncomfortable solar heat without diminishing the natural daylight entering the space.
Understanding the Solar Heat Challenge
Skylights, due to their direct exposure to the sun, can be a significant source of unwanted heat gain, especially during peak sun hours. This phenomenon, known as the greenhouse effect, occurs when solar radiation enters a space and is converted into heat, which is then trapped. In Xenia, like much of Ohio, intense summer sun can make rooms with skylights uncomfortably warm, leading to increased reliance on air conditioning and higher energy bills.
How Spectrally Selective Film Works
Avery Dennison SP E-Lite 70 is a spectrally selective window film. This means it is designed to filter the sun's energy spectrum selectively.
- Visible Light Transmission (VLT): This measures the percentage of visible light that passes through the film. SP E-Lite 70 allows 70% of visible light to enter, a high VLT that preserves the natural brightness of the room.
- Infrared (IR) Rejection: The film effectively blocks a significant portion of the infrared spectrum, which is the primary component of solar radiation responsible for heat. By reducing IR transmission, the film lowers the amount of heat that enters the home.
- Ultraviolet (UV) Protection: While not the primary focus of this project, this film also blocks a high percentage of harmful UV rays, which can cause fading of interior furnishings and skin damage.
Project Outcome in Xenia
The application of Avery Dennison SP E-Lite 70 to the Xenia residence's skylights successfully reduced the intensity of the solar heat felt within the living space. The clients were able to retain the desired natural light, maintaining the room's bright ambiance. This solution provides a more comfortable indoor environment by managing solar heat gain, addressing the core requirement without compromising the aesthetic and natural lighting qualities of the space. This type of upgrade is a practical application of advanced window film technology for homeowners in the Dayton-Kettering area.
