LEED-NC IEQc4.1: Low-Emitting Materials—Adhesives and Sealants and IEQc4.2: Low-Emitting Materials—Paints and Coatings offer detailed guidance on how to calculate and plan for using low-emitting materials as they apply to LEED.
Purchase low-emitting paints, coatings, adhesives and sealants that meet the credit’s VOC limits.
Low-Emitting Paints, Coatings, Adhesives, and Sealants
For materials with multiple points of manufacture or extraction, if the furthest point was within 500 miles, simply list that location; if not, determine the portion of the material that is compliant.
If a material is salvaged on-site and reused again on-site, you can count the site as both the manufacturing and extraction location. For example, in the demo of a site, parking lot concrete can be ground up and reused as onsite infill.
Use the location from which the vendor salvaged the material instead of the extraction location.
Use the vendor or salvage location in place of the manufacturing location for salvaged and reused materials.
The 500-mile requirement is measured as a radius around the site “as the crow flies.” In other words, the actual miles and path traveled by the product or material are not relevant.
LEED-NC MRc5: Regional Materials offers detailed guidance on how to calculate and plan for using regional materials.
Purchase individual materials with at least 50% content that has been manufactured and extracted within 500 miles of the project.