It's also important to address the "2021" part of your search term. A public 2021 edition of the NSF/ANSI 347 standard does not exist. The standard was originally published in 2012, with the most recent reaffirmed version being from 2016. The confusion may stem from other codes like , a widely adopted fire safety code published that same year.
: Rigorous weathering tests mimicking diverse climate zones. nsfs 347 2021
NSFS 347 2021: Understanding Sustainable Single-Ply Roofing Standards It's also important to address the "2021" part
Developed through an ANSI-accredited consensus process involving manufacturers, government agencies, and environmental NGOs, NSF/ANSI 347 is the first standard of its kind for the building envelope. It covers common single-ply materials including: (Polyvinyl Chloride) TPO (Thermoplastic Polyolefin) EPDM (Ethylene Propylene Diene Terpolymer) KEE (Ketone Ethylene Ester) The Five Pillars of Assessment The confusion may stem from other codes like
This category evaluates the integration of environmental and life cycle thinking into the product design process. It rewards manufacturers who consider a product’s entire journey—from raw material selection to end-of-life disposal or recyclability—at the earliest design stages. This proactive approach ensures that sustainability is built into the product’s DNA rather than being an afterthought.