This article is based on an empirical case study with an interactive research approach focusing on gendered norms in a Swedish truck Company. It discusses the combined value of using the metaphor of a firewall for (1) analysing how organizational constraining gendered norms are done in everyday organizational life, and (2) as a practical tool to facilitate the processes aimed at improving norm awareness. The metaphor embodies an understanding that makes it possible to visualize relational ongoing organizational processes and power dimensions. In addition, the firewall is useful for emphasizing variations and complexity. Variations and dynamics are manifested in the ways that employees need to fulfil varying “codes” in order to be accepted. The possession of certain codes (norms) that are required to pass through the first layer of the firewall (employment), and give access to some networks, does not automatically ensure acceptance and integration into more influential networks (referred to as the informal and inner layers of the firewall). The results furthermore show that the firewall metaphor is fruitful when facilitating reflection processes amongst employees to improve norm awareness and to discuss strategies for change. The conclusion is that the firewall metaphor facilitates an analysis of the relational and complex doing of constraining norms, and that it also can be used to initiate change.