Abstract
This paper presents a new approach to the design and construction of glazed building envelopes using salvaged insulated glazing units from demolition sites or surplus supply. Typically, Insulated Glazing Units (IGUs) are sent to landfill. Contemporary Architectural glazing is floated using virgin sand melted at 1700°C, a high energy extractive process. Obsolete architectural glass sent to recycling plants is not fed back into new float glass, rather it is downcycled to products such as glass bottles. This paper introduces a pathway for reusing obsolete and irregular Insulated Glazing Units into new curtainwalls; a pathway that currently does not exist. We demonstrate that the carbon footprint of glazed curtainwall could be halved by utilizing reclaimed IGUs. The system is a high-performance enclosure with weather tight compression gaskets and overlapping IGUs for thermal insulation and operational energy advantages over typical curtainwall systems. The system involves a computational configuration process for determining the best fit assembly of salvaged glass from a digitized inventory. The shingled glass façade system could be used in various applications, ranging from corporate offices to storefronts. This paper presents a one-to-one proof of concept, made from reclaimed IGUs of irregular size, collected in Lewes (UK).
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