Are curtain walls cladding?

Curtain walls represent a specialized cladding category—the non-load-bearing exterior wall assembly that spans multiple floors, typically composed of aluminum frames and glazing infill. Unlike panel cladding, curtain walls integrate large glass areas for transparency and daylighting, with aluminum mullions providing structural support. These systems attach to the building’s floor slabs or columns, forming a continuous skin that resists wind loads and limits heat transfer. Aluminum curtain wall profiles accommodate thermal breaks, enhancing energy efficiency, while gaskets and sealants ensure airtightness and water resistance. In essence, curtain walls are cladding assemblies engineered to maximize views and natural light while maintaining facade performance.