NSF/ANSI 347-2021 is the current American National Standard for evaluating and certifying the sustainability of single-ply roofing membranes across their entire life cycle. Core Evaluation Categories

In the first two years of enforcement, the top reasons gaskets failed NSFS 347 2021 were:

The highest tier, representing maximum innovation, material circularity, and corporate accountability. Why the 2021 Update Matters to the Industry

Credits revolutionary manufacturing technologies or circular programs that push the boundaries of environmental performance. The Certification Tier Structure

Complying with NSFS 347 2021 offers several benefits to food businesses, including:

The strength of NSF/ANSI 347 lies in its holistic, multi-attribute approach. The standard doesn't look at a single factor, such as recycled content, but evaluates the entire product ecosystem. The assessment is broken down into five primary categories:

The standard was developed by the and published in 2021 .

Since its initial publication in 2012, NSF/ANSI 347 has played a pivotal role in driving the roofing industry toward more sustainable practices. It has spurred innovation in membrane formulations, manufacturing processes, and recycling programs. As one of eight consensus-based sustainability standards developed by NSF for building products, its success has paved the way for similar standards in other product categories.

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.

A prerequisite for certification is investment in the communities where products are manufactured, often through material donations or grants. that have achieved the Platinum rating under this standard?

Sika Achieves Platinum Certification Once Again for NSF/ANSI 347

The standard evaluates major polymer-based single-ply roofing membranes, including: (Thermoplastic Polyolefin) PVC (Polyvinyl Chloride) EPDM (Ethylene Propylene Diene Terpolymer) KEE (Ketone Ethylene Ester) PIB (Polyisobutylene) The Core Evaluation Categories

: It establishes a consistent set of environmental, social, and economic performance metrics for the roofing industry.