What Is Curtain Wall In Construction?

Curtain wall in construction denotes the external façade assembly that separates interior and exterior environments without supporting building loads except its own weight. Manufactured as prefabricated panels or stick-built on site, curtain walls combine aluminum framing members and glass or other cladding materials. The frames attach to each floor slab via anchors and accommodate movement caused by wind pressure, thermal expansion, and building sway. Sealing gaskets and weep holes ensure moisture drainage, while thermal breaks reduce heat transfer. The result is a lightweight, high-performance envelope that delivers abundant natural light, excellent thermal efficiency, and a signature contemporary façade aesthetic favored in commercial and institutional buildings.