Forum discussion
NC-v4 EQc2: Low emitting materials
we are working on a project under LEEED V4 BD&C, does the exterior concrete curing compound (to be used on the exterior slabs) need to meet the VOC threshold to be credit-compliant? we couldn't find language clarifying if VOC requirements also extend to sealants, adhesives etc. to be used on the exterior of the building.
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Are throw rugs subject to the credit requirements?
What are the adhesives and sealants to be included in the documentation?
Is there a VOC budget method for this credit?
What are the limits on the VOC budget method?
Do products applied to the weather barrier need to comply with VOC thresholds?
If one part of my multicomponent wall system is not compliant, can I still get full credit?
Kimberly Lombardozzi
Sustainability ManagerW. R. Meadows, Inc.
9 thumbs up
March 27, 2024 - 1:04 pm
In general, exterior applied products don't have Low emtting material requirements unless you are using LEED for Schools or Healthcare. Wouldn't it make sense to use the criteria below anyway?
The building exterior is defined as everything outside and inclusive of the primary and secondary weatherproofing system, such as waterproofing membranes and air- and water-resistive barrier materials.
LEEDv4 HEALTHCARE, SCHOOLS ONLY
Additional insulation requirements. Batt insulation products may contain no added formaldehyde, including urea formaldehyde, phenol formaldehyde, and urea-extended phenol formaldehyde.
Exterior applied products. Adhesives, sealants, coatings, roofing, and waterproofing materials applied on site must meet the VOC limits of California Air Resources Board (CARB) 2007 Suggested Control Measure (SCM) for Architectural Coatings, and South Coast Air Quality Management District (SCAQMD), Rule 1168, effective July 1, 2005. Small containers of adhesives and sealants subject to state or federal consumer product VOC regulations are exempt.
Projects outside North America may use either the jurisdictional VOC content requirements or comply with the European Decopaint Directive (2004/42/EC, to be updated to most current version when available) Phase II, for water-borne coatings, as analyzed according to ISO 11890 parts 1 and 2, instead of the CARB and SCAQMD regulatory standards.
Two materials are prohibited and do not count toward total percentage compliance: hot-mopped asphalt for
roofing, and coal tar sealants for parking lots and other paved surfaces.
akshaya bhaskar
March 27, 2024 - 1:56 pm
Thank you!