Nsfs 347 2021 Review

Ensures the material performs over a long operational lifespan across varying climate zones, reducing the frequency of total roof replacements.

The construction industry has long been a significant contributor to global carbon emissions and waste. As building owners and architects shift toward "green" building practices, the need for standardized, third-party verification of "sustainable" materials has become paramount. stands as the premier consensus-based standard specifically designed to evaluate the environmental footprint of single-ply roofing membranes, such as PVC, TPO, and EPDM. A Holistic Lifecycle Approach

Developed by NSF International in collaboration with stakeholders (brands, recyclers, labs, and NGOs), this standard isn’t just about “green” claims. It’s a .

Encourages the integration of life-cycle thinking, such as the use of environmentally responsible materials and recyclability. Product Manufacturing: nsfs 347 2021

Unlike single-attribute certifications that only focus on recycled content or reflectivity, NSF/ANSI 347 utilizes a comprehensive approach. It tracks a roofing membrane's environmental footprint from raw material extraction, through manufacturing and decades of building performance, to its eventual disposal or reclamation.

Evaluates the energy efficiency, water usage, and waste management of the facilities where the membranes are produced.

is the definitive national standard for evaluating and certifying the environmental, health, and operational lifecycle impacts of single-ply roofing membranes . Originally developed through a partnership between ⁠NSF International and the Chemical Fabric and Film Association (CFFA), this consensus-based framework allows architects, builders, and manufacturers to substantiate sustainability claims through rigorous third-party validation. Ensures the material performs over a long operational

The standard evaluates roofing membranes using a point-based system across , totaling a maximum of 123 points:

Before this standard, labeling a product as "sustainable" was often vague and inconsistent. NSF/ANSI 347 was created to provide objective, measurable criteria to answer fundamental questions about a roof's environmental footprint. A roof is a building's first line of defense against the elements and a major factor in its energy efficiency. By focusing on single-ply membranes (like TPO, PVC, and EPDM), this standard directly addresses the significant potential for improving a building's energy performance and positively impacting the urban environment.

Products certified under this standard help earn points toward LEED certification. 5 Critical Performance Categories Encourages the integration of life-cycle thinking, such as

As the building envelope industry emphasizes data-driven sustainability, understanding this standard is essential for specifiers looking to optimize building performance and earn green building credits. What is NSF/ANSI 347?

: Covers various single-ply roofing materials, evaluating them across several product life-cycle stages. Certification Levels

Previous versions only focused on basic tensile strength and water absorption. NSFS 347 2021 adds and extractables testing for over 100 potential contaminants.

If you are currently preparing a sustainable building project or updating a commercial specification workflow, consider these actions: