Suspended ceilings in canopies, arcades, train stations, and subway stations must satisfy a range of complex requirements, which can pose significant challenges for building planners. High requirements apply to exterior ceilings due to weather conditions, humidity and temperature fluctuations. Effective corrosion protection systems are essential for ensuring durability and safety.

Additionally, the impact of wind creates high pressure and suction loads, requiring careful planning for the design of the substructure. This often leads to the development of custom, project-specific solutions. The Hunter Douglas range of exterior metal ceilings are specifically designed to withstand these specific conditions.