Which curtain wall type offers better performance under wind load and seismic conditions?

Wind and seismic performance depend on engineered connections rather than just system type. Unitized systems often provide predictable performance under wind and seismic loads because modules are factory-engineered with tested frame-to-module interfaces and controlled gasket compression. For high-rise projects in the Gulf with extreme wind loads or in seismic zones affecting parts of Central Asia (e.g., Kazakhstan regions), unitized modules can be pre-tested for cyclic movement and leakage, offering reliable performance under dynamic loading.

Stick systems can achieve comparable structural performance when designers detail mullion spans, anchor points, and movement joints correctly. However, because stick systems are field-assembled, variability in on-site anchor torques, shim placement, and sealant application can affect overall behavior under load. Seismic performance hinges on allowing engineered movement at module-to-structure connections without compromising water-tightness; unitized modules often simplify this by concentrating movement control at prefabricated interfaces.

As a manufacturer, we produce load-tested details and provide finite-element analysis for both types. For projects in high-wind Gulf coastlines or seismic Central Asian cities, we recommend either unitized systems with proven cyclic test data or heavily supervised stick systems with mock-up testing and rigorous on-site inspection to ensure resilience.