1. Project Background and Market Requirements

Commercial buildings in North America—including office towers, retail stores, hotels, high-rise residential, educational, and healthcare facilities—require window systems with the following technical criteria:

• Energy Performance: Compliance with IECC / ASHRAE 90.1 energy codes, meeting U-Factor and SHGC requirements for the local climate zone.

• Structural and Safety Performance: High-rise buildings require wind load resistance and, in some cases, impact resistance or water intrusion control.

• Durability and Maintenance: Aluminum window systems must offer long-term durability, corrosion resistance, and low maintenance costs.

Thermally broken aluminum windows are widely used in the North American commercial market due to their structural stability and superior energy performance.

2. Technical Performance Analysis

Frame and Glazing System

• Aluminum Frame: 6063-T5/T6 alloy, thermal break width 24–34 mm, adjustable based on building height and climate zone.

• Glazing: Double or triple IGU with Low-E coating and argon fill; laminated glass optional for safety.

• Seals & Hardware: Continuous EPDM gaskets, multi-point locking hardware, ensuring long-term air and water tightness.

3. North American Commercial Building Application Analysis

4. Standards and Certification Reference

• NFRC: Whole-window energy performance certification (U-Factor, SHGC, VT, CR)

• CSA: Structural and energy requirements for Canadian projects

• NAMI / NAFS: Wind load, air, and water tightness certification

Design must consider climate zone, building orientation, and function to select appropriate glazing and thermal break dimensions to ensure energy efficiency and occupant comfort.

5. Technical Conclusion

Thermally broken aluminum window systems provide:

• Energy performance compliant with IECC / ASHRAE standards

• Structural, air, water, and acoustic performance suitable for North American commercial buildings

• Long-term durability and low maintenance, adaptable to diverse climates

This technical white paper serves as a reference for contractors, architects, and developers in North America when specifying commercial aluminum window systems.