What is the Curtain Wall?1

When architects refer to “the curtain wall,” they mean the continuous, non-load-bearing façade that wraps a building’s frame. This system uses aluminum mullions and transoms to support large glass panels or other infill materials. By isolating the building’s structural frame from weatherproofing functions, curtain walls allow for expansive glazing, slender sightlines, and uninterrupted views. The aluminum framing provides structural support for the glass, while gaskets and sealants ensure airtightness and waterproofing. Installed on the exterior of the building’s slabs or columns, the curtain wall system accommodates building movement, thermal expansion, and wind loads. Its design flexibility makes it ideal for both high-rise towers and low-rise commercial buildings seeking a modern, luminous aesthetic.