Matthias Schoenaerts is the only actor to reprise their role in the Hollywood remake, The Loft (2014).
As of 2009 'Loft' is the most attended movie in Belgian cinematic history. About 1,186,072 people have watched it, making it jump over Belgian classic Koko Flanel (1990). The latter had an attendance of 1,082,000 viewers. With its first place, Loft has also leaped over two other Flemish classics: Hector (3rd) and Daens (4th place).
The names of the main characters in Loft are the same as in "Buiten De Zone" which was also made by Bart De Pauw. (Van Outryve, Stevens, Willems, Seynaeve, Laureys)
The licence plate of the BMW is the same as in "De zaak Alzheimer" (IAM-469) which was also directed by Erik Van Looy. It was meant as a joke, because you can read it as "I am for soixante-neuf".
At a certain moment in the film there is a box with pills visible. The color of the pills are red and white, the colors of Van Looy's favourite soccer team, FC Antwerp.