Glass-tower window-wall & sealed-unit failure
if applicableHigh
Floor-to-ceiling window-wall and curtain-wall assemblies whose structural silicone joints fatigue from UV, thermal cycling and wind deflection, and whose sealed double-glazed units (IGUs) fog and fail.
The glass-tower construction boom used envelope systems now known to degrade; failures typically appear 15–25 years after construction.
What it means for you: A looming, building-wide window-wall replacement is one of the largest special-levy risks in a modern tower.
Cost signal: Exterior re-seal lasts only 10–15 years before repeat or full facade replacement; full replacement runs into the millions.
Check: Foggy/failed sealed units, glazing-joint condition, and whether the reserve plan funds a window-wall replacement.