Should window privacy film be applied to the inside or outside of the window?

This question involves the fact that windows have two sides, so different factors need to be considered. Generally, window privacy film can be applied to either the inside or outside of the window, each with its own advantages and disadvantages:

1. Applied to the inside of the window: This approach can extend the lifespan of the window film and prevent it from being ripped from the outside. Additionally, installing the film on the inside is usually more convenient. Therefore, in most cases, people choose to apply the privacy film on the inside of the window.

2. Applied to the outside of the window: Although less common, applying window privacy film on the outside can also provide some level of privacy. However, it's important to note that exterior films are directly exposed to sunlight and can get wet in rainy weather, so it's essential to select a specialized exterior window privacy film with good sun protection and waterproof properties. Of course, if you want to enhance privacy further, you can consider applying film to both the inside and outside of the window, but this may affect the amount of natural light entering the room.