The façade consists of a double-glazed glass layer lying behind an acrylic rain screen. The acrylic is assembled in panels with periodic openings inducing a stack effect to cool this south-facing glazed façade. The acrylic layer has a complex machined profile - solid panels of acrylic are cut away by large vertical gauges of varying width and depth, within which are etched even finer vertical striations.
The most important element for energy efficiency in a cold climate: an AIR BARRIER. It resists heat loss due to convection/air infiltration, otherwise known as "drafts" in a "leaky" building. "The stack effect provides the air pressure difference to drive air change in buildings. The stack effect occurs due to the density differences between heated and cooled air.