Solar Transmittance (T)

The amount of solar energy (visible, infrared and ultraviolet) that passes through a glazing system, expressed as a percent.

When sunlight strikes glass, solar energy is either transmitted through the pane of glass, absorbed by the glass or reflected away from the glass. The type of glass and window film applied causes varying transmittance results, shown as a percent – this is the amount of solar energy that entered through the glass and film. Always refer to a manufacturer’s film-to-glass installation recommendation.