The windows of the office of ETS Nord were covered with solar control film. Even though glass facade is very striking for an office building, however in time it occured that large glass surfaces also let in a lot of heat from the sun. On sunny days the indoor temperature rose unbearably high. According to sunlight hours, either side of the building received different sun control films. The side with more sunlight hours also received a darker film to block out more heat. Filming work was ordered by ETS Nord AS.