Is the windshield film applied on the outside or inside?
2 Answers
The windshield film needs to be applied on the inside of the car. Here is an introduction to the functions of car window film: 1. UV protection: The windshield has a large heating area and receives the most UV radiation. Applying film can effectively block UV rays, protecting the health of the driver and passengers. 2. Heat insulation: Windshield film can block a portion of heat. 3. Anti-glare: During the day, sunlight can be dazzling and cause glare. Applying film to the windshield can effectively reduce blinding glare. 4. Explosion-proof: Since car windshields are made of tempered safety glass, if the glass shatters, the film prevents fragments from flying, thereby protecting the driver's safety.
I just had my new car's windshield tinted a few days ago, and the experienced technician at the 4S store told me the film must be applied on the inside. I used to think it could be applied on the outside, but that’s not the case because the exterior is prone to scratches from wipers and erosion from wind and rain. Applying it on the inside has many benefits: it protects the film from fading due to sun exposure and reduces glare, making driving safer. I watched them work in the shop—they first cleaned the glass surface, then used a spray for installation to ensure no bubbles. The technician warned that if low-quality film is poorly applied, it can affect nighttime driving visibility and even cause issues due to weak adhesive. Now that it’s in use, it’s great—the car doesn’t get too hot in summer, and the sunlight isn’t glaring. Feels totally worth it.
