Can the old film be covered directly without peeling it off?
2 Answers
For sedans, it is not advisable to apply a new film directly over the old glass film without removing the old one first. The old film must be removed before applying a new one. Functions of car film: Car films serve various purposes, including blocking ultraviolet rays, providing heat insulation and sun protection, preventing glass from shattering and causing injury, reducing glare, creating a private space, and lowering the load on the air conditioning system. How to choose car film: Check the color: Typically, safety films come in light green, sky blue, gray, brown, or natural colors that are comfortable for the eyes. Smell the film: Inferior films often contain high levels of benzene in the adhesive layer, which can produce a strong odor. Check the specifications: Consult the salesperson in detail to verify the authenticity and quality of the film. Feel the texture: Generally, the thickness of a quality safety film is no less than 1.5mil, so it should feel thick and smooth to the touch.
I recommend not applying new window film directly over old film, as this can cause numerous issues. The old film's surface may have bubbles, scratches, or dust, preventing the new film from adhering properly and potentially creating more bubbles that impair driving visibility. In strong sunlight or nighttime driving, blurred vision increases accident risks. I've seen cases where people tried this, only for the film to peel off shortly after. Regular window maintenance is crucial – it's best to remove the old film, thoroughly clean the surface, then apply new film to ensure clarity and safety. Otherwise, the small time saved might result in higher repair costs and safety hazards.
