Reducing Heat, Glare & Cooling Costs With Externally Applied Solar Film

Lustalux has been a long-standing market leader in the supply and installation of Solar Control Window Film. In recent years due to the advancement window film manufacturing technology resulting in longer warranties, more film than ever is being installed to the external face of glass.

We were contacted early in 2018 by one of our FM clients managing premises for one of the UK’s largest high profile insurance companies. The company was experiencing extreme solar gain issues through their south-facing glazing of one of their buildings thus impacting significantly on interior comfort and on cooling costs.

Something had to be done and Lustalux came to the rescue with Solar Gard Sentinel Silver 20 external grade solar control window film. Successful trials were initially carried out to demonstrate to the end client that the film would indeed solve their solar gain issues followed by the full installation.

The work took place during our recent long hot summer and it took around three weeks to complete the 1100m2 installation.

The film was installed using powered access by one of our IPAF accredited installation teams

Solar Gard Sentinel outside weatherable window film is a weather resistant film manufactured with a high-tech, scratch resistant coating that protects the film from exposure to our often harsh and varied British climate. Specially designed to be installed on the outside of the window (face 1 of a DGU), Sentinel window films provide numerous advantages in terms of performance, versatility and ease of installation.

Outside weatherable film provides owners and occupants with an energy advantage by improving the total solar energy rejected from a window. Just like indoor window film, Sentinel external grade film significantly reduces the amount of solar heat from entering the windows. It also naturally expels more of the solar energy outdoors instead of absorbing it into the film and glass. When solar radiation strikes window film, some of that radiation is absorbed into the film, causing the glass temperature to rise. The energy in the glass can then be conducted either inside the room or outdoors. With sentinel external grade films, more of the absorbed energy is released into the outside air, putting less stress on the actual glass.