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

Industrial Maintenance and Dry Fog

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Celimar Fournier
Project Engineer
Turner Construction
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What is the VOC Limit for Industrial Maintenance and Dry Fog?

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Wed, 08/02/2017 - 13:11

SCAQMD RULE 1113. ARCHITECTURAL COATINGS (19) DRY-FOG COATINGS are coatings which are formulated only for spray application so that when sprayed, overspray droplets dry before falling on floors and other surfaces. Max VOC - 50 g/l
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Celimar Fournier
Project Engineer
Turner Construction
LEEDuser Premium Member
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Wed, 08/02/2017 - 13:38

John, thanks for the response. We are currently using a Sherwin Williams product, B42W1 - Waterborne Acrylic DryFall Flat. I went to their website and shows this product under the category of Dry Fog and it shows it complies with LEED v3.0. The VOC is 84g/l. Based on what you're telling me it won't comply. But based on their information it complies. What do you think?

Wed, 08/02/2017 - 13:48

I believe they are mistaken - never trust a manufacturer when they state that a product complies (especially when they say "we will get you a point"!) without verification, there is alot of misunderstanding in the industry. As listed above, SCAQMD clearly states that the VOC limit is 50 g/l max. http://www.aqmd.gov/docs/default-source/rule-book/reg-xi/r1113.pdf

Wed, 08/02/2017 - 14:36

The current limit is 50 g/l. However, LEED v3 references the limits in effect in 2004, at which time the limit for dry-fog coatings was 150 g/L. So, while I agree that you should never trust a manufacturer when they state that a product complies, in this case SW is correct.
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Lyle Axelarris
Building Enclosure Consultant
BPL Enclosure
LEEDuser Basic Member
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Wed, 08/02/2017 - 18:18

I don't believe Dry-Fog Coatings were included in the 2004 version of SCAQMD Rule 1113 (which is the basis for LEED 2009 projects). The version John referenced appears to be from 2016. The VOC limit may still be 50 g/L if it should be classified as an Interior Flat Coating (GS-11, 1993), but could be higher if its classified differently. See Table 1 in the IEQc4.2 section of the LEED 2009 Ref Guide, with 10/1/2013 addenda (#100001805)

Fri, 08/04/2017 - 14:51

Yes, Kristen, you got me you are correct - I was thinking too far ahead......

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