How is rigid polystyrene typically installed?

Rigid polystyrene is commonly installed by gluing or nailing it in place. This method effectively secures the polystyrene panels to the desired surfaces, ensuring proper insulation and minimizing air leakage. The adhesives or nails provide a strong bond that helps maintain the integrity of the installation, which is crucial in applications like thermal insulation for buildings or other structures where energy efficiency is a concern.

In contrast, painting in place does not apply, as rigid polystyrene is typically not painted but may be covered or masked after installation. Hanging is also not practical since rigid polystyrene panels are generally too thick to be suspended properly. Lastly, placing it loosely would compromise the insulation's effectiveness, leading to potential gaps that can allow air infiltration, which is counterproductive to its intended purpose. Thus, securing the panels with glue or nails ensures the best performance of rigid polystyrene installations.