Is it normal for car film to shed powder when wiped after aging?
3 Answers
It is normal for car film to shed powder when wiped after aging. Car window film is a thin layer applied to the front and rear windshields, side windows, and sunroof of a vehicle. This thin layer is also known as solar film or explosion-proof heat-insulating film. The functions of car window film include: blocking solar heat and glare; reducing the load on the car's air conditioning system, improving fuel efficiency, and enhancing driving comfort; blocking ultraviolet rays to protect the skin of occupants from UV burns and slow down the fading, aging, and cracking of interior materials; increasing driving safety by keeping glass fragments in place to prevent injuries; and creating a private space to prevent others from peering in. Methods to remove aged and powdery car film: Set a hair dryer to the hot setting and blow it on the edges of the film while peeling it off to soften the adhesive; any remaining adhesive residue on the glass can be coated with sewing machine oil and wiped off after a few hours to ensure no stains are left on the glass.
I've driven several cars, and it's quite common for the film to start flaking off powder as it ages. This is actually normal. Generally, car films are made of plastic-like materials, and prolonged exposure to wind, sun, and rain will gradually cause them to degrade and break down. The powder is a manifestation of the material deteriorating. Don't worry, it's not a big issue, but if left untreated, it can become problematic. Excessive powder buildup can obstruct your vision or scratch the car's paint. Once, I neglected it and ended up with powder flying into my eyes, nearly causing an accident. I recommend parking in shaded areas to reduce sun exposure and regularly wiping the film with a soft cloth and mild cleaner. If the flaking is severe, avoid scrubbing forcefully and instead consult a professional shop for replacement—it's not too expensive and ensures safety.
It's quite normal for car film to age and flake. I've seen it happen several times over my decade-plus of driving. The reason is simple: prolonged heat exposure causes the film layer to deform and eventually crack into powder, especially common in older vehicles. While it's normal, caution is advised as the flakes can cause skin irritation or degrade air quality inside the car. I've noticed the powder tends to clog the AC filter, reducing cooling efficiency. During each maintenance check, I inspect the film's condition and avoid harsh wiping to prevent damage. Early maintenance like applying UV-protective coatings is recommended to extend its lifespan. If flaking becomes frequent, it's best to have a professional assess whether a full replacement is needed—safety first.
