Paired Picture and Awning Windows: If a single large picture window is still not enough window for you, you can also pair sets of picture windows in a row. Unitized systems put larger components of the wall up at a time.
Thermally broken aluminum frames are one way to improve insulation in windows. They thus require a careful choice in insulation to minimize condensation.
Exterior glazed systems have panels that are installed from the exterior of the curtain wall, but these may be difficult to install as they require scaffolding access.
This area is generally opaque, but can be modified to be aesthetically pleasing.
Spandrel areas that are designed to conceal the building floor beams and other supporting elements. Nevertheless, aluminum is prized for its many advantages such as durability, recyclability, and strengthand its conductivity can be reduced by the addition of a thermal barrier.
Exacerbating the problem, alloyed aluminum—the most popular framing material in the industry—is also highly conductive. Unitized systems where the wall is made of large components that are assembled in a factory and put up at the construction site.
Together, low-e coatings and insulating glass units IGUs improved the thermal performance of glazed openings immensely, since the glass itself represents the largest surface area over which thermal transfer occurs.
Some curtain walls use drainage cutters to remove condensation to the exterior.