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Curtain Wall Parts: Full Component Guide

Explore essential curtain wall parts from mullions to gaskets. Learn their roles, benefits, and how each contributes to structure, energy, and design.
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Sommario

Curtain walls are non-load-bearing exterior walls used in modern buildings to enhance appearance and performance.

Curtain wall structure diagram showing mullions transoms and glass panels fixed to building edges

This guide explores essential curtain wall parts and how they impact strength, energy efficiency, and design.

Montanti

Mullions Curtain Wall Parts

Mullions are the main vertical and horizontal framing members in a curtain wall system.

They support the weight of the glass or infill panels and help transfer loads to the building structure, forming the structural backbone of the façade.

Transoms

Transoms Curtain Wall Parts

Transoms are the horizontal connectors between vertical mullions.

They distribute loads evenly and make it easier to install panels across multiple stories, maintaining the curtain wall’s structural integrity.

Supporting Frame

Moderna facciata continua in vetro con sistema di intelaiatura in alluminio

The supporting frame—typically made from alluminio or steel—holds the entire curtain wall system in place.

It provides rigidity, ensures proper alignment, and anchors all other components securely.

Anchors and Fasteners

Anchors and Fasteners Curtain Wall Parts

Anchors and fasteners are critical hardware elements that attach the curtain wall to the building’s main structure.

These ensure the system stays stable and safe, even under wind or seismic pressure.

Pannelli in vetro

Glass panels reflecting light in a modern building interior

Glass panels are the most visible part of a curtain wall.

They can be clear, tinted, reflective, laminated, or insulated—offering both aesthetics and performance benefits like daylighting and thermal efficiency.

Spandrel Panels

Spandrel Panels Curtain Wall Parts

Spandrel panels are opaque sections that cover structural parts like floor slabs.

They’re often insulated and color-matched to blend with glass panels, maintaining a uniform exterior appearance.

Infill Panels

Infill panels are non-glass units made from materials like aluminum, stone, or composites.

They add visual variety to the curtain wall while enhancing insulation, durability, and weather resistance.

Gaskets and Sealants

Gaskets and Sealants Curtain Wall Parts

These essential components help keep your curtain wall system airtight and watertight.

Fatto da silicone or rubber, they seal the joints between glass panels and the frame to prevent air leaks and water intrusion.

Interruzioni termiche

Thermal Breaks Curtain Wall Parts

They stop heat from passing through the metal, making your building more energy-efficient and comfortable all year round.

Pressure Plates and Cover Caps

Pressure Plates and Cover Caps Curtain Wall Parts

Pressure plates hold the glass panels firmly in place, while cover caps snap over them to protect the edges and create a clean, finished look.

Together, they boost both safety and design appeal.

Conclusione

Cross sectional view of curtain wall profile with aluminum framing gaskets and glass panels

Curtain wall parts like mullions, panels, seals, and frames each play a critical role in supporting structure, boosting energy efficiency, and enhancing aesthetics. Choosing the right components ensures lasting performance.

Need help planning your curtain wall system?

Reach out to our team for expert advice and customized solutions.

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