Framed glass curtain walls utilize aluminum or steel profiles to create a structural framing system for the glazed facade. Mullions and transoms form a grid into which glass panes are secured, providing an exterior building enclosure.
Unlike structural glazing systems, framed curtain walls rely on conventional mullions and not structural sealant to support wind loads and glazing. The metal framing provides a robust internal structure for anchoring the glazing units.
Framed curtain walls offer versatile design options for mullion and glass configurations. Narrow mullion profiles can maximize transparency while wider spacing suits larger panels. Thermal breaks in the frames enhance energy efficiency.
Modularized units can be pre-assembled offsite for efficient installation. The framing allows various specialized glass types like insulating, laminated or tempered glazing. Spandrel panels can be integrated for opacity.
Framed curtain walls withstand weather and keep interiors comfortable. Innovations like pressure equalized rainscreen systems improve waterproofing. Operable vents allow natural ventilation.
With advantages in structural integrity, weatherproofing, noise insulation and fabrication, framed glass curtain walls balance performance with aesthetics. The framing lends design flexibility for fenestration patterns and visual contrast effects. Framed systems deliver efficient, resilient exterior envelopes.
