Does Solar Film Go On The Inside Or Outside?

Does Solar Film Go On The Inside Or Outside?

When considering solar film for your windows, one common question arises – should the film be installed on the inside or outside of the glass?

Placement Options

Solar film can be installed either on the interior or exterior surface of windows, each with its advantages and considerations.

  1. Interior Installation – Installing solar film on the interior surface of windows is the most common and practical approach. Interior installation offers several benefits…
    • Protection from Weather – Interior installation protects the film from exposure to harsh weather conditions, such as rain, snow, and UV radiation, which can degrade the film over time.
    • Easier Maintenance – Interior installation makes it easier to clean and maintain the film, as it is shielded from outdoor elements and can be accessed from inside the building.
    • Aesthetics – Interior installation preserves the exterior appearance of the building, as the film is not visible from the outside.
  2. Exterior Installation – While less common, exterior installation of solar film may be suitable for certain situations. Exterior installation offers the following advantages…
    • Enhanced Heat Rejection – Placing the film on the exterior surface of windows allows for greater heat rejection, as the film intercepts solar energy before it enters the glass.
    • UV Protection – Exterior installation provides additional UV protection for windows and furnishings, reducing fading and damage caused by UV radiation.
    • Security – Installing solar film on the exterior surface adds an extra layer of security, making it more difficult for intruders to gain access through windows.


When deciding between interior and exterior installation of solar film, consider the following factors…

  • Building Structure – The design and layout of the building may influence the feasibility of exterior installation.
  • Maintenance Accessibility – Exterior installation may require specialized equipment for maintenance and cleaning.
  • Building Regulations – Check local building codes and regulations regarding the placement of solar film to ensure compliance.

Solar film can be installed on either the interior or exterior surface of windows, each offering unique advantages and considerations. Interior installation is the most common and practical choice for most applications, providing protection, ease of maintenance, and aesthetic appeal. Exterior installation may be preferred for situations requiring enhanced heat rejection, UV protection, or security. Consult with a professional window tinting provider to determine the best placement option for your specific needs and circumstances.