Forum discussion
NC-2009 IEQc4.1: Low-Emitting Materials—Adhesives and Sealants
On our project, the Sealant VOC level is higher than the allowed limits and according to the manufacturer, that product curing is less than two week and the VOC level drops below the allowed limits. The building opened for occupancy more than a month after they used that sealant.
Can we pursue this credit knowing that the sealant VOC level is below the limit when the building was occupied?
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Do products applied to the weather barrier need to comply with VOC thresholds?
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Do grout and caulking need to be included, and if so, what is the application category?
Debra a. Lombard
Construction Administrator/ LEED APBywater Woodworks, Inc.
47 thumbs up
December 23, 2019 - 4:15 pm
I would say No however there is one possibility. I have seen this many many times where the VOC info on a TDS and VOC in g/l on SDS are not the same; and still many times the Mfgr will confirm the VOC's listed is not even correct on either of those 2 documents.
So in my opinion, I would contact the Mfgr to confirm the actual VOC's in g/L as calculated per appropriate referenced Rule version then compare that # to the SCAQMD Rule limit, making sure to get the category of use per Rule correct.
If Mfgr confirmed VOCs is confirmed as higher than Rule limit, then you'd need to do a VOC budget calculation.
I've never done a VOC budget calculation done with actual quantities used onsite. That may be very time consuming and you may not be able to get actual volumes used of all products. But Subs should be able to tell you how much they purchased which you could then assume as "used" and include as the volume.
Debra