In addition to reducing heat gains, energy saving window film will also slow the rate of heat loss. ‘U-value’ measures the rate which heat escapes through a material (walls, roof, glass etc.) and Solar Sentry glass insulating window film will reduce this rate by up to 41%!
Slowing down heat loss means that it will take less heating to maintain a desired temperature, and will feel much more comfortable as less heat is being lost through the glass.