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NSF 140 Carpet Sustainability Certification

UL is an approved certification body for the NSF/ANSI 140 Sustainable Carpet Assessment Standard for commercial carpets and rugs, providing manufacturers with third-party certification of their sustainable products.

Carpeting in a clean modern conference room.


The NSF/ANSI 140 Sustainable Carpet Assessment Standard for commercial carpets and rugs was written through a public process by a multistakeholder group of manufacturers, suppliers, regulatory agencies, customers, end users, academics and other industry participants. It is based on life cycle assessment principles and offers three levels of achievement:  silver, gold and platinum.

The standard is divided into five categories, based on a 114-point scale (plus Innovation):

  • Public health and environment: 30 points
  • Energy and energy efficiency: 20 points
  • Bio-based content, recycled content, EPP materials: 22 points
  • Manufacturing: 17 points
  • Reclamation and end-of-life management: 25 points
  • Innovation: maximum of 10 points

Certification is awarded when 14 prerequisites are satisfied and the required amount of optional points is achieved.

  • Silver – All prerequisites and minimum of 37 points
  • Gold  All prerequisites and minimum of 52 points
  • Platinum – All prerequisites and minimum of 60 points


Certification to this industry-leading standard provides a market-based definition and path to more sustainable carpet through performance requirements for the individual product and the manufacturer. Products with this certification can contribute to sustainable building programs, such as LEED.

Our dedicated, knowledgeable and customer service-oriented team members work closely with participating carpet and rug manufacturers to help ensure a smooth and efficient certification process. Once certified, manufacturers can leverage the certification mark to gain marketplace preference and increase the likelihood of product specification.

Why UL

Our dedicated staff works closely with participating carpet and rug manufacturers to hone their expertise in the area of commercial carpet and rug standards. That means we have the knowledge and resources to seamlessly guide you through the carpet sustainability certification process — from beginning to end. Once you have met this voluntary standard and receive certification, you’ll be able to demonstrate your commitment to sustainability and achieve more credibility in the marketplace.

Related Standards

NSF/ANSI 140 Sustainable Carpet Assessment Standard

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