There are films with different levels of reflection on either side – high external reflection and low internal reflection. They’re sometimes called one-way mirror films.
When it comes to one-way mirror films, there are many film types to choose from. What matters are your preferences regarding how reflective and how dark the film is.
For something as vital as an interview room, a very high reflection and dark film works best.
For something not so vital, where just a degree of privacy is required, a lower reflection and lighter film fits better. This will allow more light into the room and not darken it as much.
Selecting the right film is always subjective. The client’s idea of a dark or light room may vary from your own. That’s why it’s so important to talk to us about your expectations for the best balance.
The film will only work when it’s brighter outside than inside, i.e. daytime. At night when the light balance swaps, the neighbours will be able to see in.
In the case of a bedroom, the low reflective side would be facing into the room. At night, the end user would not see a mirror on the glass, but the neighbours can see in. It would therefore be necessary to close blinds or curtains at night for privacy. There is no film that can provide night time privacy other than a frosted film.