Case Study: Hospital Elevator Curtain-Wall Sealing Repair (Zero Downtime)
The First Affiliated Hospital of Zhengzhou University faced leakage at the elevator curtain wall of Building 1. With continuous patient, visitor and staff traffic, any shutdown was unacceptable. The project became a model for hospital curtain-wall maintenance delivered without disrupting operations.
The Challenge
Aged weather-resistant sealant had cracked and detached, allowing water into the elevator lobby during rain. Safety, infection-control and uninterrupted vertical transport all had to be maintained.
Our Approach
- Phased work zones with protective enclosures so the elevator kept running.
- Full sealant removal — old silicone cut out, grooves cleaned back to a sound substrate.
- Re-application of neutral silicone weather-resistant sealant at every joint.
- Hardware adjustment of openable leaves for smooth operation.
- Water-spray acceptance test at critical junctions.
Safety & Compliance
High-altitude operation permits, enclosed workspaces and coordinated scheduling with hospital facilities kept risk low and operations normal.
Result
Leakage was eliminated, the facade appearance restored, and hospital operations continued without interruption. Read the full curtain-wall maintenance case study.
Frequently Asked Questions
Can curtain-wall repair be done without stopping a building?
Yes. Phased enclosures and off-peak scheduling let hospitals, offices and malls stay open, as shown in the Zhengzhou hospital case.
What sealant is used for hospital curtain walls?
Neutral-cure weather-resistant silicone, applied after full removal of failed sealant and cleaning of the groove.
How long does a hospital curtain-wall sealing project take?
Phased works typically run over scheduled windows of a few days to weeks, matched to the building's operation.
How is quality verified?
A water-spray acceptance test at critical junctions confirms the joints are watertight before handover.