Evaluation of energy efficiency, water conservation, waste minimization, and Greenhouse Gas (GHG) tracking.
Raw material choices, content transparency, and integration of recycled or bio-based material.
For architects and specifiers, NSF/ANSI 347 serves as a valuable tool for selecting sustainable roofing products, which can contribute points toward green building certifications like LEED. For manufacturers, certification to NSF/ANSI 347 provides an objective and transparent way to validate the sustainability of their products and differentiate themselves in the marketplace. nsfs 347 2021
For architects and specifiers, this standard simplifies the complex task of material selection. By choosing a product certified to NSF/ANSI 347, professionals can ensure they are meeting high benchmarks for sustainability that are recognized by major green building programs. Notably, products certified under this standard can earn points toward certification, making them highly desirable for high-performance building projects. Conclusion
NSF/ANSI 347-2021 serves as the benchmark for evaluating the sustainability and life-cycle performance of single-ply roofing membranes. This multi-attribute standard assesses products across five categories—design, manufacturing, durability, governance, and innovation—to award certification levels ranging from Conformant to Platinum. For more details, visit Sika usa.sika.com/sarnafil/en/sustainability/nsf-ansi-platinum-rating.html. Sika Achieves Platinum Certification Again for NSF/ANSI 347 For manufacturers, certification to NSF/ANSI 347 provides an
If you are looking at a document or a product label marked "nsfs 347 2021," it indicates that the roofing membrane product conforms to the sustainability requirements set by the 2021 version of the NSF/ANSI 347 standard.
Developed collaboratively by NSF International and the Chemical Fabric and Film Association (CFFA), the standard establishes a consensus-based framework for single-ply roofing. Unlike single-attribute labels that focus only on recycled content or energy star ratings, this framework uses a multi-attribute approach. It tracks a product's impacts from raw material extraction to manufacturing, building operations, and end-of-life reclamation. Applicable Roof Membranes Notably, products certified under this standard can earn
Evaluates raw material extraction and environmentally responsible choices.
Pandemic pedagogy: learning in motion If the course dealt with systems—food systems, public-health systems, or technological systems—then 2021 offered a live laboratory. Students weren’t just reading case studies about disrupted supply chains; they were watching grocery shelves empty and reappear, tracking global shipping delays, and seeing how local farmers pivoted to CSA boxes and direct-to-consumer models. The classroom shifted from a static lecture hall to a patchwork of Zoom rooms, community partnerships, and fieldwork where safety protocols mattered as much as research methods.
, this standard provides a rigorous, third-party verified framework for evaluating the environmental performance of roofing materials like PVC, TPO, EPDM, and KEE throughout their entire life cycle. The Evolution of Sustainable Roofing
NSFS 347-2021 serves as the benchmark for mechanical joining technology in the thermoplastic piping sector. By enforcing strict material and performance guidelines, the standard protects public health and safety while supporting innovation in plumbing system installation. Manufacturers seeking to market mechanical couplings in North America generally require certification to this standard.