An example of a Sustaining Vinyl Roof

Sustainability Standard - NSF/ANSI 347: Sustainability Assessment for Single Ply Roofing Membranes


NSF/ANSI 347, Sustainability Assessment for Single Ply Roofing Membranes, is the first standard for evaluating and certifying sustainable attributes of single-ply roofing membranes over their entire life cycle. As products with environmental claims continue to enter the marketplace, independent, third-party certification of products to national standards can help architects and specifiers make educated decisions about product selection. NSF 347 provides a standard of excellence in sustainability for the entire single ply roofing industry. It is now one of eight consensus-based sustainability standards developed through NSF for building products. It is also the first one that addresses the building envelope, carrying with it significant potential for improving building energy efficiency while positively impacting the quality of the urban environment.

NSF/ANSI 347 is one of eight consensus-based sustainability standards being developed through NSF. NSF-certified sustainable products also earn points toward the U.S. Green Building Council's LEED Certification.

The standard employs a point system to evaluate roofing membranes in several areas, including:

  • Product Design – Integration of environmental and life cycle thinking into the product design process
  • Product Manufacturing – Quantification of the environmental impacts from manufacturing, and actions to reduce or eliminate those impacts
  • Membrane Durability – Membrane physical properties, service life, and repairability
  • Corporate Governance – Human rights, child labor, forced labor, employee safety and education, and community responsibility
  • Innovation

Manufacturers certified by NSF are authorized to use the NSF Sustainability Certified Mark on their products and in their advertising.

Sustainability Case Studies

Carnegie Mellon
Carnegie Mellon Library
Carver Hawkeye Roof
Carver Hawkeye
Artique Farms Case Study
Artique Farms
Case Study: Hawaii Beach Front
Hawaii Beach Front
Powell Hospital
Powell Hospital


Durability Vinyl Roofs

PVC roofing membranes can stand up to some of the toughest stresses and have been proven to support and protect roofs throughout the world. Learn more about this durable, high-performance roofing solution »


Aesthetics Vinyl Roofs

PVC membranes' aesthetic qualities make them the choice for any roof design. Find out why PVC is recommended for projects with aesthetic considerations here »

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    “When we bid out the project using metal on the roofs, it came in over budget. The green color of the Sika Sarnafil vinyl roof gave us the look of aged copper which was exactly what we had in mind. More importantly, the owners would get the long-term, proven performance they required,” – Robert Marz, president, Roth Marz Partnership.