Films
Window Films are a retrofit upgrades that are installed to flat glasses in existing houses and buildings to eliminate glazing such as heat and glare reduction, thermal insulation, UV Filtration. Window Films are also purposely installed for Safety and Security, Privacy, Decoration and Graffiti Protection.

Window Films help prolong the life span of fixtures and fittings as it rejects UV Radiation which is the main contributor of fading.
 
In choosing, you must consider the absorptance of the glass and the film, the size of the pane, the thickness of the glass and the construction of the window such as is it single pane, insulated glass, laminated or toughened.