Best Practices for IGU Installation in Commercial Window Systems: Avoid These 5 Common Mistakes

31 Jul.,2025

Weather sealing is essential for ensuring the longevity and performance of Insulating Glass Units (IGUs). A survey reveals that about 70% of IGU failures stem from inadequate weather sealing techniques. Ensure you select suitable sealants that can withstand varying temperatures and humidity levels.

 

Table of Contents

1. Incorrect Weather Sealing

Weather sealing is essential for ensuring the longevity and performance of Insulating Glass Units (IGUs). A survey reveals that about 70% of IGU failures stem from inadequate weather sealing techniques. Ensure you select suitable sealants that can withstand varying temperatures and humidity levels.

Key Points to Remember:

  • Choose high-performance sealants.
  • Apply sealant evenly to prevent air and moisture infiltration.

2. Neglecting Structural Integrity

The frame must be strong enough to support IGUs without risk of deformation. Inappropriately designed frames can lead to significant failures. A study indicates that 55% of commercial installations used frames that did not meet necessary load specifications.

Considerations for Framing:

  • Use materials certified for IGU applications.
  • Ensure correct spacing and alignment during installation.

3. Inadequate Edge Deletion

Proper edge deletion is crucial as it helps prevent moisture accumulation between panes. Shockingly, 40% of IGU failures are traced back to insufficient edge deletion practices. For reliable IGU performance, adhere to prescribed edge deletion protocols.

Best Practices for Edge Deletion:

  • Utilize proper tools for edge deletion.
  • Follow a strict guideline for edge preparation.

4. Improper Handling Techniques

Transporting and handling IGUs can significantly impact their integrity. A staggering 30% of IGU faults are attributed to mishandling. Always maintain vertical positioning and use appropriate padding to protect IGUs during transit.

Handling Guidelines:

  • Keep IGUs upright for transport.
  • Use protective barriers to prevent impact damage.

5. Ignoring Manufacturer Guidelines

Neglecting to follow specific manufacturer directions is a common practice that can lead to critical errors. Approximately 50% of installing contractors skip essential guidelines, risking performance and warranties. Always consult the manufacturer's installation manual before proceeding.

Key Manufacturer Guidelines include:

  • Recommended installation temperatures.
  • Approved sealant types and application techniques.

Conclusion

Proper IGU installation is vital for maximizing performance and longevity in commercial window systems. By avoiding common mistakes related to weather sealing, structural integrity, edge deletion, handling techniques, and manufacturer guidelines, you can significantly enhance the durability of your insulating glass units. Implement these best practices to ensure high-quality installations that stand the test of time.