855773644-LEED-v5-BD-C-Reference-Guide-Launch-Edition - Page 509
Extracted Content
Projects must provide glare-control devices for all transparent glazing in regularly occupied spaces. The requirement applies to transparent glazing, so diffused and translucent glazing systems do not require glare-control devices. All glare-control devices must be operable by the building’s occupants to address unwanted glare and to allow for active participation between the building and the building occupant. Automatic devices with user override and exterior shading designs such as awnings, louvers, and shading screens are acceptable.
Glare-control devices are not required for spaces designed specifically for direct sunlight such as atriums or solar collection areas where direct sunlight is part of the design intent. In these cases, teams must establish a clear rationale, articulate the benefits, and ensure alignment with project goals. For example, the space may be intentionally designed to support Option 1. Integrated Biophilic Design or Option 2. Adaptable Environments.
Table 7. Glare control devices
| Acceptable glare-control devices | Unacceptable glare-control devices |
|---|---|
| Interior window blinds | Fixed fins |
| Interior shades | Fixed louvers |
| Curtains | Dark color glazing |
| Moveable exterior louvers | Frit glazing treatment |
| Moveable screens | Additional glazing treatments |
| Moveable awnings |
PATH 2. QUALITY ELECTRIC LIGHTING
Properly focused lighting at the right level and quality enhances concentration and minimizes distractions. [6] Poorly lit spaces can cause headaches and eye discomfort while well-illuminated work environments can help reduce stress levels and improve the overall well-being of employees. [6] Electric lighting glare can significantly impact specific populations — such as aging adults and neurodivergent individuals — by causing discomfort, visual strain, and even emotional or cognitive disruptions. [178 ]
Projects must meet both Electric Light Glare Control and Color Rendering requirements within all regularly occupied spaces. Exceptions to the electric glare requirements include wallwash fixtures properly aimed at walls, as specified by manufacturer’s data, indirect uplighting fixtures, provided there is no view down into these uplights from a regularly occupied space above, and
178 Aryani, S., Kusumawanto, A., Suryabrata, J. and Wijaya, D. “The correlation of lighting and mood in the workplace: digital imagebased research”, Journal of Graphic Engineering and Design. (2024): 15. 23-31, https://doi.org/10.24867/JGED-2024-1-023, accessed April 5, 2025, https://www.researchgate.net/publication/378820577_The_correlation_of_lighting_and_mood_in_the_workplace_digital_image- based_research.
U.S. Green Building Council LEED v5 Reference Guide for Building Design and Construction, April 2025 Launch Edition 499