Reducing Thermal Bridging from Antenna Installations Using an External-Wall Mounting Block to Support Sustainable Development

The aim of this study is to improve the energy efficiency of buildings by reducing the impact of point thermal bridges. A detailed analysis was carried out on an antenna holder mounted to the building partition. To limit heat transfer through the partition, a mounting block was applied. This element serves as an insulating function for the partition and as a load-bearing support for external components. In order to assess the effectiveness of the proposed solution, numerical simulations of heat transfer were conducted. Two types of models were analyzed: an idealized model, in which all layers (wall, insulation, and additional structural elements) are perfectly joined, and a more realistic model, which accounts for air gaps between different layers—especially between the insulation and additional structural elements—resulting from typical wear and usage. It was found that models with air gaps demonstrated the advantages of the proposed solution. In this case, the use of the mounting block retained twice as much heat inside the room compared to the configuration without the block. Thus, the applied mounting block effectively reduced the impact of point thermal bridges at the antenna holder by approximately 50%. This translates directly into reduced energy consumption during building operation, which aligns with the concept of sustainable environmental development.