There are many uses for Window Film. Blocking the nasty heat in your homes/offices, Blocking UV Rays and to prevent fading of your furniture, increasing durability and safety of your glass windows, and the list goes on.
Another common use for window film is for privacy. Several window films have effects of "blurring" or "darkening" glass windows. This gives a certain level of privacy to prevent prying eyes into your house/office.
1) Translucent/blur/frosted film - these films are usually white and gives a cloudy/frosted effect. While light can still pass through, the visibility is greatly reduced to just shadows. Conversely, the view outside will be blurred too.
2) Blackout/Whiteout film - these films as suggested by its name blocks out light completely. This would also mean that you will not be able to see out. This also means the room will be in total darkness 24/7.
3) Low Visible Light Transmittance Film / One Way Mirror Film - Darker/Reflective films can achieve privacy in the daytime when there is more light outside. People cannot look in while the occupant can have a clear view outside. Do note that in the night, this effect is reversed when the lights are brighter indoors - people can look in clearly, but you cannot look out.
Privacy Window Films can offer certain degree of privacy depending on the type of film used or the lighting conditions. To truly achieve privacy, we would recommend combining window film with other products like blinds and curtains. In this way, privacy can be 100% achieved and heat can be effectively blocked out.
Still not sure how this works? Contact us anytime and we will gladly explain to you.