What is the reason for slight blurriness after applying the front windshield film?
3 Answers
The slight blurriness after applying the front windshield film is due to the time required for the moisture to dry. It is normal for cloud-like moisture to appear between the film and the glass during different winter and rainy conditions. This will naturally dry and disappear after 4-10 weeks of exposure to sunlight. The main functions of car window films are to block ultraviolet rays, reduce heat, prevent injuries from glass shattering, reduce glare, and provide personal privacy protection through the one-way transparency feature of solar films. Additionally, they help minimize UV damage to interior items and passengers, lower the car's interior temperature through physical reflection, reduce the use of air conditioning, and consequently decrease fuel consumption and save costs. After applying the film, do not roll down the windows for 3 days, avoid cleaning the film surface or turning on the defroster switch for a week, refrain from using solutions containing alcohol or ammonia to clean the film, and do not use sharp objects to pull the edges of the film. If bubbles appear after application, they must be addressed at the installation workshop within 24 hours. Avoid directing the air conditioning towards the film to prevent severe thermal expansion and contraction. High-quality car films generally have a warranty period of 5 years. If the film exceeds this period, car owners should avoid handling it themselves and instead visit a specialized installation workshop for removal. For films on the market, removing the adhesive without damaging the glass is relatively easy, ensuring that the glass remains in good condition for reapplication.
I think the blurriness after installing a front windshield film is usually caused by trapped air bubbles or dust during installation. Even a tiny air bubble or a speck of dust under the film can refract light and create localized blurriness, especially noticeable under strong sunlight during the day. Another reason could be that the moisture behind the film hasn't fully dried yet, which is normal in the first few days after installation—just give it time to evaporate. My advice is to wait patiently for three to four days first. If the issue persists, check for raised air bubbles and try gently smoothing them out with a soft card, but avoid using excessive force to prevent scratches. Choosing a reputable shop with professional installation tools is crucial—don't attempt DIY application. Driving with a blurry windshield can impair your judgment of distance and road conditions. If the problem remains unresolved, consider returning to the original shop for rework or replacing the film altogether.
I've encountered this situation before when applying film, and it cleared up pretty much after two days. Moisture residue is the main issue. After the film is applied, the adhesive needs time to dry. Wait a few days for the water to evaporate, and it will naturally become clear. However, if the blur persists for a long time, it's likely due to dust getting in during installation or bubbles not being completely removed. In that case, you'll need to have a professional reapply it. Avoid applying film during humid seasons, and choosing a reputable professional shop can reduce problems. If the film is of poor quality—such as being too thick or uneven—it may appear blurry when light shines on it, and the only solution is to replace it. Remember, driving with blurry film is especially dangerous at night, as it makes it hard to see vehicles and pedestrians ahead. Address the issue promptly—safety comes first.
