347 2021 [new]: Nsfs

The best match for the keyword "NSFS 347" is the standard for single-ply roofing. The year 2021 might refer to a document, article, or event that discussed or applied this standard during that year. It's important to note that the standard itself was published in 2012 and 2018, but not in 2021.

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

Use the standard to ensure the accuracy of sustainability claims and to meet LEED certification requirements.

If you are interested in learning more about the technical details of the certification, or comparing manufacturers, I can help you find specialized information regarding specific membrane types (EPDM, TPO, PVC) that meet these requirements. Share public link nsfs 347 2021

A roof cannot be sustainable if it must be replaced every decade. This section assesses the physical properties, projected service life, and ease of repairability of the membrane. High-performing membranes that maximize building energy efficiency (such as highly reflective "cool roofs" that combat the urban heat island effect) score highly here. 4. Corporate Governance

Depending on the total number of points scored across the five pillars, a roofing membrane is awarded one of four sequential certification levels: Certification Level Requirements Meets all mandatory prerequisites Silver Meets prerequisites + minimum optional point threshold Gold Meets prerequisites + intermediate optional point threshold Platinum Meets prerequisites + highest tier of optional points

Incentivizing "take-back" programs and recycling initiatives to prevent old roofing membranes from ending up in landfills. Industry Impact and Transparency The best match for the keyword "NSFS 347"

The keyword refers to the Sustainability Assessment for Single-Ply Roofing Membranes . Developed by NSF International in partnership with the Chemical Fabrics and Film Association (CFFA), this standard serves as the ultimate national benchmark for evaluating the environmental, health, and corporate lifecycle footprint of low-slope roofing systems.

A sustainable product is a durable one. This criterion evaluates the roof membrane's resistance to weathering, UV radiation, and mechanical damage, ensuring it has a long lifespan and reduces the need for frequent replacements. 4. Corporate Governance

Minimum 75 points (The highest level, recently achieved by Sika's Sarnafil membranes in late 2025). Benefits for Professionals Share public link A roof cannot be sustainable

| Parameter | Older NFS 347 | NFS 347:2021 | Improvement | |-----------|--------------|--------------|-------------| | Lead limit | ≤ 0.2 mg/L | ≤ 0.01 mg/L | ✅ Significant tightening | | Microbial testing frequency | Not specified | Defined sampling plans | ✅ Clearer protocols | | Artificial sweetener declaration | Vague | Explicit + warning labels | ✅ Consumer right-to-know | | Sugar content | No requirement | Still no limit | ❌ Missed opportunity |

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

Implementation of groundbreaking practices or technologies that advance sustainability parameters. Levels of Certification

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

Products are awarded points based on how thoroughly they satisfy the criteria in the categories above. Based on their final score, roofing membranes are granted one of four tiered certification levels: Certification Level Requirements / Profile