A window wall system is a type of exterior wall cladding that is installed within the slab edge of a building, spanning only a single floor.
Key Characteristics of a Window Wall System
Window wall systems are defined by their unique installation and structural characteristics:
- Single-Story Span: They only extend across the height of one floor. This means they are supported by the structural slabs located directly below and above.
- Slab-Edge Installation: Unlike curtain walls, window walls are installed within the slab edges, creating a flush or slightly recessed appearance. This is crucial for understanding their structural support and appearance.
- Structural Dependency: They rely on the building's structural framework for support. The slabs provide the necessary points of attachment.
Window Wall vs. Curtain Wall
Understanding the difference between a window wall and a curtain wall is crucial for proper specification in building design.
| Feature | Window Wall System | Curtain Wall System |
|---|---|---|
| Span | Single-story | Typically multi-story |
| Support | Supported by the floor slabs below and above | Structurally self-supporting; independent of floor slabs |
| Installation | Installed within the slab edge | Installed proud of or beyond the slab edge |
Practical Insights
- Window walls are commonly used in mid-rise buildings where simplicity and cost-effectiveness are priorities.
- They often consist of pre-manufactured panels that include the glazing and the framing, facilitating quick and efficient installation.
- They can be designed with various glazing options to provide energy efficiency and aesthetic appeal.
Examples of Window Wall Systems
Window wall systems are widely used in:
- Office buildings.
- Apartment complexes.
- Schools and educational facilities.
In these applications, the system provides a weather-tight exterior envelope and allows ample natural light into the interior spaces.
