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Visible Light Transmittance (VLT)
KEY DEFINITIONS AND BENEFITS OF WINDOW FILM
The percent of total visible light that is transmitted through the window film/ glass system. The lower the number, the less visible light transmitted. Visible light transmittance can be thought of as how light or dark the film is. With current technology, both films with high and low visiual light transmittance have powerful heat screening abilities.
The measure of a surface's ability to absorb or reflect far-infrared radiation. The lower the emmisivity rating, the better the insulating qualities of the of the window film/ glass system. Higher insulating qualities will help prevent cool air from heating up due to outside temperatures as well as keep hot air from being lost to the outside during the winter months.
Solar window films help to nearly eliminate the transmittance of Ultraviolet Light. Ultraviolet light contains invisible, high energy wavelengths emitted by the sun which is the primary cause of fading and discoloration of furnishings and materials. Protection from Ultraviolet light also protects your skin from the sun's harmful rays. Most window film provides protection roughly equal to +285 SPF sunblock.
Spectral selectivity refers to the amount of visible light window film transmits in relation to the amount of heat it transmits. A spectrally selective film will allow more visible light to come through the window than infrared energy. In other words, spectrally selective films are able target and block the amount of heat passing through a window without reducing the amount of visible light passing through. This allows for lighter, more efficient window films.
Certain window films are specifically designed to reduce the amount of glare created by incoming light. These wiindow films filter out the harsh white light for an easy-on-the-eyes view out of your windows. You can think of glare reducing window film like putting sunglasses on your home or office.
Dual reflective window films provide low reflectance when viewed from the interior of a window and a more reflective exterior, which creates added privacy during the day and helps provide high heat rejection. Residential and commercial customers prefer these films because they minimize interior reflections, keeping views clear both day and night. Dual refelctive films are neutral in appearance yet they provide significant glare reduction and reduce energy costs.
We believe that solar window film is truely amazing. Over the past two decades, film manufacturers have created some of the most innovative ways to help people stay safe, stay comfortable, and save energy. Below are some useful terms to help you along in your film purchasing process. To view the specific products that we carry, check out our window tinting pages linked here.
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