Is the Windshield Film Applied Inside or Outside?
2 Answers
The windshield film is applied inside, and its functions include: 1. Heat insulation and sun protection to reduce the interior temperature; 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. Post-application precautions are: 1. Avoid rolling down windows for 3 days; 2. Do not clean the film or turn on the defogger heating wires for a week; 3. Do not use nails or sharp objects to lift the edges of the film to prevent dirt from entering; 4. Avoid attaching suction cup items to the film for 1 to 2 weeks; 5. Bubbles, displacement, or blurred vision on the film should be addressed by a professional technician promptly to ensure driving safety.
I usually enjoy DIY car window tinting and have applied front windshield film several times. I can confidently say that it must be applied on the interior side. Applying it externally is just asking for trouble—the wipers scrape against it daily, rain and dust stick to it, causing scratches or peeling that can't even be washed off. Interior tinting is safer, cleaner, and won’t be damaged by sun or rain, while also providing heat insulation and UV protection, making the AC more efficient and saving fuel in summer. I once tried applying it externally, and it was ruined within days—wasting money and creating a hazard. When applying it yourself, remember to clean the glass thoroughly and use tools to smooth out bubbles for longer-lasting film. In short, interior tinting is the smart choice—it protects both your car and yourself, so don’t skip this step.
