Energy Savings and Lighting Benefits from High-LR Ceilings
High light reflectance ceilings* enhance the benefits of indirect lighting by improving overall lighting uniformity, returning 90% of light back into the space, compared to 75% with standard ceilings.

a. Typical acoustical ceiling (LR 0.75) reflects just 75% of the light striking its surface
b. High LR ceilings are engineered to reflect up to 90% of the light striking their surface


The energy, cost and environmental advantages of combining high light reflectance ceilings and indirect lighting were substantiated in a third-party, independent Brinjac Engineering Research Study (“Energy and Environmental Effects of High Light Reflectance Ceilings* in Offices,” 2006).

High light reflectance ceiling benefits include:
• Total building energy savings up to 11%
• 23% reduction in lighting energy at same light level (fewer
indirect lighting fixtures and lamp/ballast replacements)
• 7% savings in cooling system energy
• Increased occupant satisfaction and productivity
• Ability to secure tax credits for energy efficient design
• Ability to secure LEED credits
• More effective use of energy budgets**
*A high light reflectance ceiling – LR 0.83 or greater per ASTM E 1477-98
as referred to in ASTM E 1264-98

**Based on standards like those developed by the American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE) and the International Energy Conservation Code (IECC) currently being adopted across the U.S. In addition, the Energy Policy Act of 2005 (EPAct 2005) gives tax credits for energy efficient design below ASHRAE 90.1-2001 standards to encourage owners to reduce energy use below the code required minimum.


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