Windows do a hard job in a building. Most importantly: provide day-lighting, shield us from the elements and other threats, and are thermal barriers to keep out atmospheric heat and cold. Quite a responsibility, and mostly taken for granted. The cost-effectiveness of energy-efficient window films cannot be overlooked.
Energy-efficient windows in any building is key. No doubt, window insulating films will increase energy efficiency year-round with much faster payback than total window replacement. The result is better energy savings per dollar spent. High-performance window films improve on winter U-Factor, just like Low-E glass, by acting as a layer of insulation, thereby retaining more of the interior heat of a building. The interior glass surface will be warmer to the touch than bare glass.
Low-E Coatings & Performance.
The National Fenestration Rating Council (NRFC) is now giving a performance rating on glass & window films, which only adds credibility to the product. Additionally, architectural window films are eligible for LEED certification points.
To clarify- energy efficient window films offer protection and excellent value by improving energy efficiency and living comfort in every season.