Is Car Window Film Applied on the Inside or Outside?
2 Answers
Car window film is applied on the inside. Here is relevant information about car window film: 1. Functions: Heat insulation and sun protection, UV blocking, safety and explosion-proof, creating private space, reducing air conditioning load, saving fuel, enhancing aesthetics, and preventing glare. 2. Working principle: Through vacuum plating or magnetron sputtering technology, metals such as aluminum, gold, copper, and silver are made into multi-layered, tightly packed high-heat-insulation metal film layers. The higher the metal's conductivity coefficient, the shallower the penetration depth and the higher the reflectivity. These metal layers selectively reflect various heat energy sources in sunlight, including infrared, ultraviolet, and visible light heat energy. Combined with the film's color absorbing solar heat radiation and then releasing it outward again, part of the heat is carried away by outdoor air flow. Thus, it effectively achieves the function of heat insulation.
When I first bought my new car, I was completely confused about the window tinting issue. I thought the window film was applied on the outside because it looked cooler that way. But after actually trying it, I realized that car window film is definitely applied on the inner surface, not the outside. This is because if it were applied on the outside, exposure to wind, sun, and rain could easily cause scratches or bubbles, making it much less durable. Applying it on the inside, however, ensures the glass is cleaner and smoother, making the application easier and less prone to damage. After applying it myself once, I noticed improved privacy inside the car and much better sun protection, making summers less unbearably hot. Before applying the film, it’s essential to wash the car and clean the glass thoroughly to avoid fingerprints or dust bubbles. Now that I think about it, window tinting isn’t just for aesthetics—it also reduces UV damage to the interior, making it a win-win solution.
