Why Apply Window Film When Car Glass Already Blocks UV Rays?
2 Answers
While car glass inherently provides UV protection, most vehicle owners apply window film primarily to maintain cabin privacy. Below is relevant information about automotive window films: 1. Definition: Automotive window film (Auto-film) refers to applying a thin film layer on the front/rear windshields, side windows, and sunroof. This film is also known as solar film or heat insulation film. 2. Functions: Blocks UV rays, reduces heat transmission, prevents glass shard injuries, minimizes glare, and protects personal privacy through one-way visibility. Additionally, it safeguards interior items and occupants from UV damage, lowers cabin temperature via light reflection, reduces AC usage, thereby improving fuel efficiency and cutting expenses.
As a seasoned driver with years of experience, I always thought the original car glass had decent UV protection. However, actual testing revealed it only blocks a portion of UV rays, especially UVA rays which have strong penetration and can harm the skin or cause interior aging. That's why I applied window film primarily for its heat insulation function. During summer drives, the film blocks most of the solar heat, cooling the car interior much faster and saving on air conditioning, making it far more comfortable than bare glass. Additionally, the film enhances privacy protection, making it difficult for outsiders to see inside, deterring thieves, and reducing glare for safer, less eye-straining driving. From a safety perspective, the film also reinforces the glass, preventing shattering and flying debris in case of a collision. Although slightly pricey, the overall upgraded experience makes long drives much more bearable.
