Is it necessary to apply tint film on rear side privacy glass?
3 Answers
No, it is not necessary. Vehicles equipped with rear privacy glass do not require additional tint film, as the privacy glass itself is coated with a dark-colored layer and a heat-insulating film to protect personal privacy. Therefore, models with rear privacy glass functionality do not need additional tinting. Below are relevant details: 1. New car tinting: Many car owners choose to have window tinting applied at an auto beauty shop after purchasing a new car, as applying a film on the car windows can provide heat insulation. The reason for opting for window tinting is that most new cars, except for some high-end models with rear privacy glass, have relatively transparent front or full-car glass. This exposes drivers to intense sunlight and UV rays during summer, making the driving experience uncomfortable. Applying a window film can reduce direct UV exposure inside the car, thereby minimizing UV radiation to the driver and passengers. 2. Film selection: When applying tint film, it is essential to choose high-quality film and have it installed at a professional auto beauty shop. Poor-quality films may bubble under sunlight, potentially obstructing the driver's view of the road and compromising driving safety.
My two kids always love to lean against the car windows when they get in the car, and I've actually researched this issue. Privacy glass can indeed block some visibility, but to put it simply, it's just regular glass with a layer of dark dye added. Last summer, when I took the kids to the beach, the sunlight came straight through and made their arms feel hot, and I immediately regretted not getting the windows tinted. Later, I went and got heat-insulating film installed, and the difference in coolness was significant. Plus, the film contains a UV-blocking layer, which is like adding a protective shield for the kids. Here's the key point: when tested with a UV meter, it's clear that privacy glass blocks at most 70-80% of UV rays, while professional film can block over 99%. Now, even with ice packs in the car, they don't melt as quickly as before. That's what I call real sun protection.
From a technical perspective, the UV rejection rate of rear privacy glass typically ranges between 30%-40%, while infrared rejection mostly stays below 20%. However, parameters of premium heat insulation films on the market differ significantly. Mid-range ceramic films generally start at 95% UV rejection with approximately 70% infrared rejection, while top-tier products can even achieve dual 99% performance. More crucially, window films reinforce glass structure - standard car windows produce over 300 flying fragments upon impact, which reduces to under 50 pieces when filmed. I often recommend a dual-layer upgrade for privacy glass: applying a 5mil security film as protective barrier, then adding a 70% visible light transmission nano-ceramic film for heat insulation. This maintains privacy effectiveness while improving fuel efficiency with AC usage in summer.
