Is Car Film Applied on the Outside or Inside?
2 Answers
Car window film should be applied to the inside of the car glass. This is because the film won't be exposed to wind and rain when applied on the inside, which slows down aging and extends its lifespan. Additionally, it won't be subject to significant external interference during use, preventing scratches or damage. The adhesion will also be more secure, avoiding issues like peeling edges. Benefits of car window film: 1. Heat and Sun Protection: The film effectively blocks a large amount of heat generated by infrared rays. 2. UV Protection: Medium and long-wave UV rays can penetrate thick glass, but applying heat-insulating film can block most UV rays, protecting the skin and reducing interior aging. 3. Safety and Explosion Protection: The base layer of the film is made of polyester, which is highly resistant to tearing and puncturing. Combined with the adhesive layer, the film strengthens the glass, preventing injuries from accidental breakage. 4. Creating a Private Space: With the right type of film, the interior becomes difficult to see from the outside while maintaining clear visibility from the inside, ensuring privacy and safety. 5. Reducing Air Conditioning Load and Saving Fuel: Heat-insulating film compensates for the loss of air conditioning cooling capacity, quickly lowering the interior temperature and saving fuel to some extent. 6. Enhancing Aesthetics: Applying film allows for personalized styling based on individual preferences. 7. Reducing Glare: The film minimizes accidents caused by glare.
I previously made a mistake with the film placement, thinking it should be applied to the outside. As a result, bubbles appeared shortly after application. Car window film is actually applied to the inner side of the glass to avoid exposure to wind, rain, and dust. Applying it inside effectively blocks sunlight, provides heat insulation, and ensures privacy. If applied outside, it's prone to damage and can obstruct visibility. That time, I spent money to have it reapplied at a professional shop. The technician emphasized thoroughly cleaning the glass before application to ensure no bubbles. When selecting film, it's important to consider light transmittance and heat insulation values—films that are too dark may impair nighttime visibility. After reapplying the film on my SUV, I noticed significant energy savings on the air conditioning during summer and reduced UV exposure to my skin. I advise new car owners not to repeat my mistake—applying the film inside is the correct approach. Regularly check the film's condition to prevent aging.
