Is the car windshield film applied on the inside or outside?
2 Answers
Car windshield film is applied on the inside. The primary purpose of front windshield film is to block sunlight and UV rays, which is a major concern for many people. Additionally, it provides heat insulation—many practical tests have shown that front windshield film can indeed block a portion of heat, with noticeable effects. It also reduces glare, effectively diminishing blinding light and meeting privacy protection needs. Things to note when applying front windshield film: It is generally recommended to dry heat the film horizontally, as this method is relatively easier. Before applying the film, check if the window glass is intact and the overall condition of the car glass to ensure smooth subsequent film application. Always cover necessary interior parts before applying the film to prevent liquid seepage.
As an experienced driver with over a decade behind the wheel, I can confirm that windshield tint film should absolutely be applied on the inside. If you apply it on the outside, exposure to wind and rain will quickly cause scratches and bubbles, rendering it useless within months. Last year, I tried applying film to the outside once – after summer sun exposure, it warped and bubbled so badly my vision was impaired, which is dangerous. Applying it inside actually protects the film, maintains clear visibility, and provides heat insulation and UV protection. There are also legal requirements – the film must have over 70% light transmittance, which can only be achieved when applied inside. Don’t cut corners; choose a reputable brand and have it professionally installed once. Remember, safe driving is what matters most.
