Counter Selective Glazing for a Passive Building Concept

Exploring facade options for maximizing passive comfort from a thermal, glare and acoustic perspective lead to a dynamic facade concept with a highly unusual glazing approach. For a large restoration project in the San Francisco Bay Area, the multidisciplinary Arup design team identified the ideal glazing product to be selective towards infrared light transmission. The glazing was to maximize transmission in the infrared spectrum to utilize passive solar gains whilst controlling the visual spectrum for glare comfort. The façade concept features internal louvers control of unwanted heat gain during midday in summer and autumn. Glas Troesch assisted the team with technical expertise and developed a series of unique samples that investigate different coating approaches with ‘IR-selectivity’ and indicate an economic way to realize a large scale project with such a novel glazing approach.