There are many different grades, shades, colours, and thicknesses of available window films built to offer solutions to a variety of challenges. Window films are a retrofit upgrade for existing glass that can be used to address problems inherent to glazing, including:[2]

heat and glare reduction
thermal insulation
UV filtration
safety and security
privacy
decoration, signage and branding
protection from graffiti.
Automotive styling
Window films are an extremely cost-effective method to reduce heating and cooling costs in existing buildings by reducing the amount of heat transfer through glazing