Structural silicone in Dubai curtain walls is exposed to UV indices above 11 for eight months of the year, daily 20-degree thermal swings, and abrasive sand. Manufacturers rate the sealant for 20 years in Europe; in Dubai, that figure is typically 12-15 years with quarterly inspection.
What inspectors actually look for
The four failure modes are surface chalking, adhesion loss at the bondline, internal crazing, and joint movement beyond design tolerance. Surface chalking is cosmetic but signals chemistry breakdown; adhesion loss is the safety-critical defect.
How quarterly inspection works
Inspections combine ground-level visual sweep, BMU-platform close inspection of representative panels, and adhesion pull-tests on suspect joints. Reports document every defect against floor and elevation, photographed against a reference scale.
When to repair vs reseal a full elevation
Localised repairs are appropriate when defect density is below 5% of the bondline; above that, a phased reseal is more cost-effective than reactive patching that will recur within two seasons.
Facade owner checklist
- Quarterly visual inspection by a competent contractor
- Annual close inspection from BMU or rope-access
- Pull-test on at least 1% of bondline length annually
- Documented defect register with location codes
- Five-year structural silicone life forecast review
- Records retained for the building life cycle
Why this matters
A glass panel failure is rare but catastrophic; quarterly inspection records also support insurance and rating reviews.