Types of Curtain Wall System and Their Advantages


Curtain wall systems are essential components in modern architecture, providing both functional and aesthetic benefits to buildings. These non-structural exterior cladding systems protect buildings from the elements, provide thermal insulation, and enhance visual appeal. This article explores the different types of curtain wall systems and their respective advantages.

Curtain wall

Stick Curtain Wall Systems

Stick curtain wall systems are one of the most traditional and widely used types of curtain wall systems. They are assembled on-site from individual components such as mullions, transoms, and glass panels.

Advantages of Stick Curtain Wall Systems

Flexibility: Stick systems offer great design flexibility, allowing for custom configurations and adaptations to complex architectural designs.

On-Site Adjustments: These systems enable adjustments during installation, which can be beneficial for accommodating on-site conditions and ensuring a perfect fit.

Lower Initial Costs: Stick systems generally have lower initial material costs compared to pre-fabricated systems, making them a cost-effective option for many projects.

Ease of Transportation: Individual components are easier to transport to the construction site, reducing logistical challenges.

Unitized Curtain Wall Systems

Unitized curtain wall systems consist of large, pre-fabricated panels that are manufactured off-site and then assembled on-site. Each unit is typically one story high and one module wide.

Advantages of Unitized Curtain Wall Systems

Speed of Installation: Pre-fabrication allows for faster installation on-site, reducing labor costs and project timelines.

Quality Control: Off-site manufacturing ensures higher quality control and precision, resulting in better performance and durability of the curtain wall.

Reduced Site Disruption: Unitized systems minimize on-site construction activities, reducing noise, dust, and disruption, especially in urban areas.

Weather Independence: Since the majority of work is done off-site, unitized systems are less affected by adverse weather conditions, ensuring smoother project schedules.

Semi-Unitized Curtain Wall Systems

Semi-unitized curtain wall systems combine elements of both stick and unitized systems. Parts of the curtain wall are pre-fabricated off-site, while other components are assembled on-site.

Advantages of Semi-Unitized Curtain Wall Systems

Balanced Approach: Semi-unitized systems offer a balance between the flexibility of stick systems and the efficiency of unitized systems.

Improved Quality: Partial pre-fabrication enhances quality control compared to fully site-assembled systems.

Cost Efficiency: These systems can be more cost-effective than fully unitized systems while still offering some of the benefits of pre-fabrication.

Structural Glazing Curtain Wall Systems

Structural glazing curtain wall systems use glass as the main structural component, with minimal use of metal frameworks. These systems provide a sleek, modern aesthetic with large expanses of glass.

Advantages of Structural Glazing Curtain Wall Systems

Aesthetic Appeal: Structural glazing offers a clean, contemporary look with uninterrupted glass surfaces, enhancing the building’s visual appeal.

Daylighting: Large glass panels allow for maximum natural light penetration, reducing the need for artificial lighting and improving energy efficiency.

Thermal Performance: Advanced glazing technologies, such as low-emissivity (low-E) coatings, can improve the thermal performance of structural glazing systems.

Enhanced Views: These systems provide unobstructed views, making them ideal for high-rise buildings and scenic locations.

Point-Fixed Curtain Wall Systems

Point-fixed curtain wall systems use a series of metal fittings to attach glass panels to the building’s structure, providing a minimalist and transparent appearance.

Advantages of Point-Fixed Curtain Wall Systems

Transparency: Point-fixed systems offer high levels of transparency, creating a seamless connection between indoor and outdoor spaces.

Architectural Freedom: These systems allow for innovative and unique architectural designs, making them popular for iconic buildings and landmarks.

Lightweight Construction: The minimal use of metal framework reduces the overall weight of the curtain wall, potentially lowering structural requirements and costs.

Ease of Maintenance: Individual glass panels can be easily replaced or maintained without dismantling large sections of the curtain wall.


Curtain wall systems play a critical role in modern building design, offering a range of options to suit various architectural and functional requirements. Stick, unitized, semi-unitized, structural glazing, and point-fixed systems each have their unique advantages, allowing architects and builders to choose the best solution for their projects. For more detailed information or to find a reliable supplier, feel free to contact us.