Unitized curtain
walling system
Better quality control as the entire facade is manufactured under factory conditions. Faster installation. Easy Span up to a storey height in most cases. Large, medium & smaller size unit/elements can be factory made and transported to site. Units/Elements can be lifeted straight from containers into position, reducing site damage.
Crane time required to erect large units and off-load units. Greater transportation cost compared to semi unitized system. Factory must be large with overhead crane and elaborate equipment. No Loose components other than anchors and brackets to be stored on site. Extreme care to be taken in transporting and handling finished elements avoid damage.
Semi unitized curtain
walling system
Quality dependent on site assembly work, which is critical and needs to be controlled.
More time required for installation.
Span up to two storey height.
Mullion/transom to be installed piece by piece and small pre-glazed frames can be installed.
Material to be loaded on floors for installation.
Can be installed without the use of a crane.
Less expensive to transport the material and pre-glazed sub-frame.
Factory equipment can be relatively simple to manufacture this curtain walling system.
Loose material stored site awaiting installation can be damaged or missing. Can be transported and handled easily.
