Infrared blocking window tint will keep heat from escaping the car as well as keeping it from entering. This is good in cool weather. There is more energy in the visible wavelengths of sunlight than the infrared wavelengths. Visible light wavelength in sunlight enter the car through the glass then heat into interior surfaces. The interior surfaces then radiate light in the infred. This heat is transfered to the air in the cab. Light absorbed by the tint heats the glass, then is radiated as infrared. The most effective solution is reflective tint, which is not legal in most places. The claims that infrared blocking tint will keep your car cooler are somewhat disingenuous.
A proper windshield film is invisible day or night. I’ve had it on two cars and will always have it on every car now.
Tint laws are per state. UT (where I’m located) allows up to 70% on front windshields. On my Raptor I had 40% and couldn’t tell from inside out but it was dark on the outside looking in. I did end up getting pulled over for the windshield tint, he told me to get it changed out to 70%. No ticket though.
Same. I’ve had 4 vehicles with windshield tint. 70% is essentially invisible. The amount of heat it cuts down is incredible. I will never go without it again.
The glass is already heavily tinted from the factory. The heat you feel from it is the temperature of the glass itself, bombarded by IR, absorbing that energy and transferring it to surroundings. To really lower its temperature you have to intercept IR before it reaches the glass. One available example is Twraps’ protection film that goes on the exterior of the roof. A ceramic tint on the interior side might impede energy from being transferred to cabin air, but not as effective as mitigating IR exposure on the exterior side.
