About Window Film

Window Film

What is Window Film

Window Film is a thin laminate that can be installed on the interior or exterior of a glass in homes, offices or vehicles. Different films are meant to solve different problems. For example, solar films are meant to reduce the heat coming into your homes/buildings/vehicles. While frosted films are meant to give you privacy. And safety films are installed to enhance the strength of the glass to ensure it does not shatter and hurt anyone.

Window Films

Understanding Specifications

Total Solar Energy Rejected

The total amount of heat that is rejected by the film. The higher the number the better the performance.
Solar Energy (Heat) consist of 3 main things:
i. Infrared Rays – 53% of Heat (Main Source of Heat)
ii. Visible Light – 43% of Heat
iii. Ultraviolet Rays – 4% of Heat

IR Rejection

Infrared Rays Rejection: Infrared is the biggest contributor to the total heat. It is the percentage of Infrared Rays being rejected by the film. This measurement is between the wavelength of 780nm to 2500nm. The higher the percentage the better the performance.

Shading Coefficient

Shading Coefficient (SC Value) is a measurement of the thermal performance of the glass unit (panel or window) in a building. It is the ratio of solar gain (due to direct sunlight) passing through a glass unit to the solar energy which passes through a 3mm clear float glass. The lower the SC Value to better the performance of the film.

Solar Heat Gain Coefficient

The SHGC is the percentage reduction in incident solar radiation admitted through window film, both directly transmitted and absorbed and subsequently released inwards. SHGC is expressed as a number between 0 and 1. The lower the SHGC, the lesser heat is transmitted through the film.

Visible Light Transmittance

The amount of visible light that is passing through the film. The lower the number the darker the film is.

Ultra-Violet Rejection

This is the total amount of UV Rays that are being rejected by the film. The higher the number the lesser UV Rays are being transmitted through the film. Ultraviolet Rays are the most harmful component of heat. It causes premature ageing of skin, one of the leading causes of skin cancer and the discolouration of furniture and flooring.

Visible Light Reflectance

This is the amount of light being reflected by the film. The higher the number the more reflective the film will look. (Mirror-Like Film) The Building & Construction Authority of Singapore only allows a maximum of 20% visible light reflectance on the buildings & cars.