To simply identify the quality of a car window film, you can check the following aspects:
Light Transmission: A good quality window film should have good light transmission without affecting your driving vision. You can assess this by seeing if the view outside the window is clear or if there’s noticeable blurriness.
Heat Rejection: High-quality films effectively block solar heat. You can test this by feeling the temperature difference between areas with and without the film under sunlight—good films will significantly reduce heat.
Color Stability: A quality film’s color will remain stable and won’t fade even after prolonged exposure to sunlight. If the film looks like it may fade or become uneven, it could be a sign of poor quality.
UV Protection: Quality films often state how much UV they block, usually 99% or more. You can verify this by checking the product specifications or using professional testing equipment.
Bubbles and Wrinkles: Poor quality films tend to develop bubbles or wrinkles after installation, while good films should be smooth and well-adhered without any visible defects.
Texture: High-quality window films usually feel thicker and more durable, while low-quality films may feel thin and tear easily.