External films are also much more effective at controlling excess heat as the stop the heat from going through the glass and getting trapped within a double glazed unit. if in doubt, order a film designed for exterior application. Make sure you read the specifications for all the products before making your selection. Care must be taken when selecting one way film for double glazed windows as the darker grades are not suited to units where the glass is not toughened or tempered. One way vision film is suitable for application on smooth non textured glass. If for instance your windows are facing North with no sunlight hitting the mirror window film, the privacy benefit will be negligible. One way mirror window film is therefore only suitable for privacy during the day, and more so on brighter or sunnier days. The reflective mirror effect only works when the light is brighter outside than it is inside, so in the evening or at night when the lights are on inside your house or office, the privacy effect no longer works. Thanks to the reflective silver finish, one way window film not only rejects solar heat but as the sun hits the mirror finish, it allows you to see out whilst blocking the view in from the outside world.

One way mirror film is primarily designed for solar control and to act as a window tint to reduce heat, glare and UV light (the main cause of fading of furnishings). Do make sure you check your privacy window film is compatible with your glass, especially for older double glazed units where the glass might not be toughened. As a rule, the darker films are more reflective and more likely to add the one way privacy effect allowing you to see out whilst restricting the view in.

You can choose between our dark, medium and light graded adhesive window film, or our static cling one way mirror film options, all available off the roll by the metre, or cut to your exact measurements for ease of application. One way privacy window film has a charcoal colour when looking through the glass from the inside, similar to a tinted window film, and the mirror finish is seen externally. With a mirror like finish, one way window film is a privacy window film allowing you to see out as if the glass was clear.

One way tinted window film at menards