Nsfs 347 Work [2021]

NSF/ANSI 347 is the leading sustainability assessment for single-ply roofing membranes, providing a verifiable framework for architects and specifiers to select environmentally responsible building materials. Unlike single-attribute claims, this standard evaluates a product's entire life cycle—from raw material extraction to end-of-life management. Core Assessment Categories

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The phrase appears to be a typo or a specific shorthand, most likely referring to the NSF 347 standard (Sustainability Assessment for Single Ply Roofing Membranes) . NSF/ANSI 347 is the leading sustainability assessment for