Visually Obscured Glass Units

摘要

Insulating glass units (IGUs) are often used in window and curtain wall assemblies due to their improved thermal performance as compared to assemblies with monolithic glass infill. However, monolithic glass can function for the life of the building (barring breakage), while IGUs can fail over time and become visually obscured, requiring replacement. This phenomenon, often referred to as 'fogging,' may necessitate replacement of IGUs one or more times during the useful life of the building.