Is the car window film applied on the inside or outside?
2 Answers
Car window film is applied on the inside for the following reasons: 1. It is not exposed to wind and rain, slowing down the aging process and extending its service life; 2. The film is less susceptible to external interference during use, avoiding scratches or damage. The areas where car window film is applied include: the front windshield, rear windshield, side windows, and quarter windows. The functions of car window film are: 1. Heat insulation and sun protection to reduce the temperature inside the car; 2. UV protection to slow down the aging of car interiors; 3. Preventing injuries to passengers in case of accidental glass breakage; 4. Creating a private space; 5. Reducing air conditioning consumption; 6. Enhancing aesthetics; 7. Reducing glare.
I also struggled with this issue when I first replaced my car window film. Actually, car window films are all applied on the inner side, the one facing the car interior. I later realized that applying it on the outside is too risky: exposed to wind, rain, and sunlight, the film is prone to bubbling, discoloration, or peeling off, and can even get scratched by debris. Applying it on the inside is much safer, effectively blocking heat, sun, and UV rays to protect the interior. I once tried a DIY installation and almost put it on the wrong side, but luckily a neighbor pointed it out in time. Now that it's properly installed, the car feels much cooler, and driving in summer isn't stuffy anymore. Additionally, choosing the right film material is crucial—I prefer branded products. Cleaning the inner surface of the glass thoroughly before installation is key to avoid dust affecting adhesion. The film also enhances privacy, making me feel comfortable and secure. Just remember not to use strong chemical cleaners during maintenance.
