What are the effects of not applying film to the windshield?

[VonAlejandro]

There are impacts such as heat insulation, explosion-proof, and anti-glare. The following is a related introduction to the windshield: Introduction: The windshield was an idea that Ford came up with in the 1920s, sandwiching two pieces of glass together with a layer of PVC plastic in between to create a type of glass similar to a sandwich. This technology is still in use today. Function: The windshield of a car is placed vertically, like a large plane mirror, which will image the passengers inside the car in front of the car, hindering the driver from seeing pedestrians on the road and easily causing illusions. When the windshield of the car is installed at an angle, the reflection of the passengers inside the car through the front windshield is imaged above the front of the car, while the pedestrians on the road are in front of the car, allowing the driver to distinguish between the passengers inside the car and the pedestrians on the road.

[AaronDella]

I think the main issue with not having a windshield film is the safety risk, especially if the glass is hit by stones or flying debris on the road. Without the protection of a film, the glass is more likely to shatter entirely and scatter, filling the car with sharp fragments that can easily injure the driver or passengers. Last time, my neighbor was driving without a film when a small stone hit the windshield on the highway—the fragments nearly cut his face. Fortunately, he was unharmed, but it was quite a scare. An explosion-proof film can act like adhesive tape, holding the glass fragments together and reducing this danger. Additionally, when driving in the summer without a film, the direct sunlight makes the car extremely hot, forcing the air conditioning to work harder. This not only wastes fuel but also increases the driving burden. On long-distance trips, the heat-induced fatigue makes driving even more exhausting.

[JuneLee]

Not applying windshield film significantly impacts in-car comfort. My most direct experience is during summer drives when the car feels like a steamer. Sunlight pouring through the windshield causes temperatures to skyrocket—the steering wheel burns to touch, seats become unbearably hot, and the AC has to be set to maximum yet cools slowly while consuming more power. Once on a long highway trip, the unshielded cabin temperature soared above 40°C, leaving me dehydrated and dizzy. Without UV blocking, it also risks skin burns and fades/damages interior materials. I’ve used sunshades but they’re limited—tinting effectively insulates heat and blocks UV. Night driving is worse: untinted glass amplifies glare from headlights, causing distraction and eye strain, raising accident risks. This compromises daily commutes and long-distance comfort, making it feel impractical.

[LaElliot]

Not applying film to the windshield allows UV rays and heat to directly enter the car, which is harmful to both health and the interior. When I didn't have film before, driving under the sun often caused my skin to turn red and peel, especially after long summer trips when my arms would feel burning hot. UVA and UVB rays also accelerate the aging of interior materials, such as fading and cracking of seats and dashboards. Privacy is another issue, as people can see through the car from the outside, which isn't very safe. Additionally, in summer, the car interior becomes as hot as an oven, making air conditioning less effective and wasting resources. This affects both health and energy consumption, but applying film can solve these problems.