Nsfs 347 2021 Jun 2026

Products are ranked based on the total number of points earned: Certification Level Minimum Points Required Conformant Table data sourced from Building Enclosure Online Key Sustainability Incentives Recycled Content:

Originally developed through a partnership between NSF International and the Chemical Fabrics and Film Association (CFFA) , NSF/ANSI 347 uses life-cycle assessment (LCA) principles to evaluate roofing products from "cradle to grave." This means the product is audited from the moment raw materials are extracted, through manufacturing and building use, up to its ultimate end-of-life disposal or recycling. Eligible Roofing Materials

Advancing waste minimization and zero-waste-to-landfill goals Reducing greenhouse gas (GHG) emissions Optimizing water conservation throughout production III. Membrane Durability nsfs 347 2021

Focuses on environmental and life cycle thinking during the design process.

The standard evaluates roofing membranes not on a single characteristic, but across four distinct categories. Manufacturers earn points in each area to achieve a final certification level. Products are ranked based on the total number

The (officially titled Sustainability Assessment for Single-Ply Roofing Membranes ) is the leading consensus-based national standard used to evaluate and certify the environmental, health, and operational lifecycle impacts of single-ply roofing materials .

To certify a gasket product to NSFS 347 2021, a manufacturer must: The standard evaluates roofing membranes not on a

, a standard originally published in 2012 and regularly updated (with a version relevant to current industry benchmarks in 2021). It is the first American National Standard to evaluate and certify the life-cycle sustainability of single-ply roofing membranes used on commercial buildings. BuildingGreen Overview of NSF/ANSI 347

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

The highest level, achieved by industry leaders in sustainable manufacturing.

Products are awarded one of four tiered ratings based on their total point score: Minimum 35 points Silver: Minimum 45 points Gold: Minimum 56 points