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NC-2009 IEQc4.2:Low-Emitting Materials—Paints and Coatings

Material VOC vs. Coating VOC?

I have product submittals that list both the material VOC and the coating VOC for wood stains and lacquers, the latter of which is substantially higher. I can't find any information on which VOC number LEED wants us to use - does anyone know?

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Profile picture for user emilycatacchio
Emily Catacchio
Sustainability Specialist
Wight and Company
LEEDuser Basic Member
415 thumbs up

Thu, 01/26/2012 - 23:45

Ellen,I actually touched on this in an article on BuildingGreen last March. If you have a BuildingGreen account you can view it here. If not this explaination is helpful.

Fri, 01/27/2012 - 14:49

Thanks Emily, that is very helpful. I had sort of come to the conclusion that material VOC was the number to use, but I appreciate the confirmation.
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Lindsey Evans
Architectural Designer
PGAV, Inc.
LEEDuser Basic Member
14 thumbs up

Tue, 02/07/2012 - 21:19

Emily, After reviewing the MACLAC document, I am still left with questions involving this topic. I do not have a BuildingGreen account. Under Credit IEQ 4.2 in LEED 2009 BD+C, Table 1 states the Standard VOC limits. In parenthesis at the top of the table it says "g/L minus water, minus exempt compounds." This makes it sound like the limits are measured after all the water and exempt solvents are mathematically subtracted. However, the Material VOC does not measure the VOC content with all the water and exempt solvents subtracted. It seems using the Material VOC would not be an apples to apples comparison. Why wouldn't I use the Coating/Regulatory VOC number where the water and exempt solvents are subtracted? Thank you much!

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