The standard eliminates "greenwashing" by providing a transparent, third-party verified assessment of a product's environmental performance. LEED and Green Building Certification
Achieves basic prerequisite criteria plus a foundational level of optional points.
Note: You can find a list of manufacturers with certified products on the NSF website . Why Choose NSF/ANSI 347 Certified Membranes?
Heavy emphasis is placed on post-consumer recycled content, which is valued at 100% of its weight, while pre-consumer content is valued at 50%. Life-Cycle Reporting: nsfs 347 2021
Focuses on environmental and life cycle thinking during the design process.
"NSFS" could also be a typo for , the South African National Standard for the classification and regulation of pressure equipment, such as boilers, pressure vessels, and compressed air systems. This standard uses a risk-based classification system and requires the involvement of an Approved Inspection Authority (AIA). A 2021 version of SANS 347 might exist, making this another plausible interpretation.
Uses a points-based system for objective comparison. Why Choose NSF/ANSI 347 Certified Membranes
Based on the number of points earned, products are certified into one of four levels: Sika Achieves Platinum Certification Again for NSF/ANSI 347
Measures the eco-efficiency of the production facility, including energy conservation, greenhouse gas reductions, and waste minimization.
True sustainability extends to social responsibility and corporate accountability. This section evaluates the manufacturer's corporate ecosystem: Duro-Last® and NSF/ANSI 347 "NSFS" could also be a typo for ,
is the premier American National Standard for evaluating and certifying the sustainability of single-ply roofing membranes across their entire product life cycle . In the architecture, engineering, and construction (AEC) industry, the NSF/ANSI 347 protocol serves as the primary multi-attribute benchmark. It allows manufacturers to substansiate their environmental, social, and economic sustainability claims through rigorous, independent third-party validation.
Lee’s destroyer, the USS Ironbound , was chosen. The story writes itself: a skeleton crew, a storm brewing off the Virginia capes, and a weapon that hummed with enough energy to dim the ship’s lights when powered up. At 1400, with the sea turning gray, Lee gave the order. The first shot—a 15-kilogram slug—punched through a decommissioned hulk at Mach 7, clean as a laser. Cheers erupted on the bridge.
| 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 |
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.
This multi-faceted approach ensures that sustainability is considered from manufacturing to installation, encouraging best practices throughout a product's lifecycle.