Forum discussion
When it comes to option 2 it is request to describe the method for determining reflectance values. Would a prescriptive descriptive apporach be accepted i.e. based on colour selection? For example a white paint obviously has a reflectence of 85%.
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Melissa Kelly
Sustainability SpecialistGensler
85 thumbs up
July 7, 2015 - 12:15 pm
Hi Charalampos,
In the Step-by-Step Guidance section of the Reference Guide, there's a list of three different acceptable sources for reflectance values: cutsheets from the manufacturer, values from industry standard charts, or actual measurements of finish samples. Common finishes should be included in reflectance charts and it sounds like it is okay to use those values if manufacturer data cannot be found.
Charalampos Giannikopoulos
Senior Sustainability ConsultantDCarbon
85 thumbs up
July 14, 2015 - 4:26 am
Hi Melissa, thanks for the reply. If we use reflectance charts, such as “Lighting Guide 11, Surface Reflectance and Colour” (referenced in Option 2, p. 716), I am wondering whether simple reference to the colour and hue of the work surface and movable partitions would be an acceptable way of proving the (corresponding) reflectance value.