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How to maintain and clean curtain wall systems?
Proper maintenance extends curtain wall lifespan and preserves performance and appearance. A comprehensive program combines routine cleaning, scheduled inspections at annual, 5-year, and 10-year milestones, and prompt fixes for common issues.
Routine Cleaning
- Frequency: every 6-12 months for most buildings; quarterly in coastal or high-pollution areas
- Glass cleaning: use mild detergent and soft water; avoid abrasive cleaners or metal tools
- Aluminum cleaning: soft cloth with mild soap solution; rinse with clean water
- Anodized surfaces: use approved cleaners only — harsh chemicals can damage the anodic layer
- Powder-coated surfaces: mild soap and water; inspect for coating chips and touch up promptly
Inspection Schedule
Annual inspection
- Check all weather seals and gaskets for degradation
- Inspect structural sealant for adhesion loss or cracking
- Examine glass for cracks, chips, or coating delamination
- Verify weep holes are clear of debris
- Check operable elements (windows, doors) for smooth operation
- Inspect anchors and brackets for corrosion or loosening
5-year inspection
- Comprehensive sealant evaluation (adhesion testing)
- Structural anchor torque verification
- Glass unit fogging check (IGU seal failure)
- Thermal performance assessment (infrared scan for thermal bridges)
10-year milestone
- Comprehensive facade audit
- Sealant replacement planning (structural silicone typically lasts 15-20 years)
- Hardware replacement for high-cycle operable elements
Common Issues and Solutions
| Issue | Solution |
|---|---|
| Glass fogging | IGU seal failure — replace affected units |
| Water leakage | Check weep holes, replace damaged gaskets, re-seal joints |
| Air leakage | Replace weatherstripping, adjust operable sash |
| Coating degradation | Recoat or replace affected profiles |
| Hardware failure | Replace worn hinges, locks, operators |
FOWALL provides maintenance guidance with all delivered systems, including recommended cleaning products, inspection checklists, and spare parts lists. For projects under their full installation service, FOWALL offers warranty support and can provide ongoing maintenance consultation.
Setting up a maintenance program? Contact us for guidance, checklists, and spare parts support.