Within the Indoor Environmental Quality credit category, which of the following design strategies can be...

External shading devices improve extreme-temperature resilience by stopping solar radiation before it reaches the glazing and becomes heat inside the building. Overhangs, exterior louvers, shutters, fins, and operable shading systems can substantially reduce peak solar heat gain and indoor overheating. Because fixed or manually operated external shading can function without grid electricity, it also supports passive survivability during power or mechanical-cooling failures. Tinted skylights may reduce some solar transmission but can also reduce useful daylight and do not necessarily protect vertical glazing. High-performance glazing improves envelope performance, but the question asks for the most direct strategy for controlling extreme solar heat exposure. External shading provides a reliable first line of defence and supports LEED v5’s focus on climate resilience and occupant well-being.

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