
What is a Unitized Curtain Wall? Pros & Cons
Unitized curtain wall guide: meaning, pros/cons, details, performance, install steps, QA/QC, and sourcing checklist—based on APRO factory experience.
A Semi-Visible Curtain Wall is a glass façade system that combines exposed framing elements with concealed structural components, balancing architectural expression and performance. It highlights clean lines while maintaining strong structural support and efficient building performance.
Key Specifications:
Semi-Visible Curtain Wall accessories ensure secure installation, seamless design, and enhanced structural stability.
Shows how components fit together for correct installation and assembly.
Enhances stability by resisting wind forces on hidden frame curtain wall.
Secures and aligns components of a hidden frame curtain wall.
Facilitates operation and access for hidden frame curtain wall.
Design a welcoming façade with a semi-visible curtain wall—clean lines, solid structure, and tailored glazing for bright, open entrances.
Customize height, width, and module layout to match your opening and façade grid—available in fixed, operable, or sliding configurations.
Choose clear, tinted, frosted, or Low-E glazing to achieve the right balance of transparency, privacy, and energy performance.
Define the semi-visible mullion/cap direction to align with your architectural lines—enhancing the façade rhythm without sacrificing strength.
Specify profile sections, finishes, and colors to meet structural requirements and deliver the exact look your project demands.
Optimize thermal breaks and glazing configurations to improve insulation, reduce heat transfer, and support energy-efficient building targets.
Use laminated/insulated glass and optimized air gaps to reduce noise transmission—ideal for busy streets, commercial areas, and mixed-use buildings.
Upgrade drainage paths, gaskets, and sealant detailing to improve water tightness and weather resistance under wind-driven rain.
Installing a semi-visible Curtain Wall requires precision for seamless design and optimal structural performance.
Measure and prepare the installation area.
Fix vertical aluminum mullions to the main structure.
Secure horizontal transoms to form the frame system.
Place and align glass panels within the frame.
Secure glass using exposed pressure plates.
Apply sealants and gaskets for waterproofing.
Check alignment, fixing, and sealing performance.
A semi-Visible Curtain Wall offers a sleek and modern appearance for various applications, enhancing both the aesthetics and functionality of the structure.
Unlike a Hidden Frame Curtain Wall with fully concealed frames, a Semi-Visible system features visible vertical or horizontal mullions, offering clearer structural expression and easier installation.
Key advantages include structural stability, cost-effectiveness, easier maintenance, reliable performance, and a clean, contemporary appearance.
Common options include tempered glass, laminated glass, double glazing, Low-E glass, and insulated glass units (IGU).
Hidden frame curtain walls offer a sleek, frameless design, maximize natural light, provide panoramic views, and improve energy efficiency with insulated glazing. They also enhance the building’s aesthetic appeal with minimal visual obstructions.
Maintenance is simpler due to accessible frame components, allowing easier inspection, replacement, and long-term upkeep.
Yes. Semi-Visible Curtain Walls can seamlessly integrate with operable windows, ventilation panels, and façade doors.

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