Unitized Curtainwall Systems

Curtain walls can be defined as non-structural aluminum-framed walls, containing infills of glass, thin stone, or metal panels that are connected back to the building structure. There are two main categories of curtain walls: unitized curtain walls and stick-built systems. 

Unitized curtainwall systems are compsed of large units that are assembled in the factory, shipped to the site and erected on the building Aluminium profiles are used to form the frame, which is normally one-storey high. Opening vents, glazing and infill panels are built into units before being transported to site.. This system provides dramatic improvements in quality speed and performance. 

In stick construction, the curtain wall frame is constructed mainly on site with mullions and supporting glass, spandrel panels and  aluminium panels, connected piece by piece. Each mullion is usually supported by the floor or perimeter beams.