Does the tint go on the outside or inside? The short answer is on the inside. First, the film is laid on the outside of the car’s windows and cut out to fit. Those pieces are then placed on a large piece of glass and trimmed before being installed on the inside of the windows.Click to see full answer. Also, can you put tint on the outside?Yes, you can put films on the outside surface of the glass. Keep in mind that window films are generally installed on the inside to protect them from the elements. In the past, exterior window films were overlooked because of the perception of poor durability and performance. how is car window tint applied? As an aftermarket upgrade, window tinting is generally done by applying a film to the interior of the vehicle’s windows. Window tinting on a vehicle reduces the Visible Light Transference (VLT), and window tinting is graded on the percentage of light that transfers. One may also ask, how long does it take for tint to cure? two to three days How can you tell if your car is tinted?If it’s anything darker it is most likely dealer fitted or aftermarket. (Factories are not interested in fitting tint film). You can usually feel the edge of the film where they trim it around the edge of the glass. Wind the window down and look for and edge of the film fitted to the inside.