The application of aftermarket films designed to reduce light transmission and solar heat gain on vehicle windows is typically performed on the interior surface. This placement protects the film from environmental elements such as road debris, weather, and direct contact during washing, thereby prolonging its lifespan and maintaining its effectiveness.
Interior application is crucial for preserving the film’s integrity and visual clarity. External application would subject the film to constant abrasion, leading to scratching, peeling, and discoloration. Moreover, the benefits of reduced glare, UV protection, and interior cooling are maximized when the film is applied to the inner surface, allowing it to effectively block solar radiation before it enters the vehicle cabin.
