An ultimate goal of Environmental Product Declarations (EPDs) is comparability of products. However, that’s impossible without having a common set of rules to use when calculating and reporting product-specific impacts. This is where Product Category Rules (PCRs) come into play.

PCRs help minimize market confusion by streamlining the procedures by which products are evaluated for their environmental impacts, ensuring globally consistent data collection and analysis and consistent reporting in EPDs. Ultimately, EPDs therefore enable a more fair comparison of environmental impacts between similar products.

UL is committed to furthering the consistency and transparency of PCR development processes and works with a variety of global program operators and green building schemes to ensure alignment of PCRs and resulting EPDs.

How PCRs are Developed
Request for Information
Product Category Rules Developed By UL Environment
UL Environment PCRs Under Development
UL Environment PCRs Under Public Review

How PCRs are Developed

PCRs are developed in an open and collaborative manner, much like industry standards. Interested parties and stakeholders may participate in what’s known as an open development process, which allows them to review the draft PCR, ask questions, and share comments electronically. Stakeholders may include material suppliers, manufacturers, trade associations, purchasers, users, consumers, non-governmental organizations, public agencies, LCA practitioners, and certification bodies.

UL Environment, a Program Operator functioning under ISO 14025, maintains all comments and questions received during the development process and then posts PCRs for a public comment period. Then, UL Environment will submit a final version of the PCR to a review panel for approval, and once approved, it is published on UL’s Standards website ( PCRs expire every three to five years and must be updated to address relevant changes in the industry; however, PCRs are living documents and may be updated within this window, if needed.

If you are interested in working with UL Environment on the creation of PCRs, email us at: »

Request for Information

Stakeholder engagement is an essential component in the development of UL Environment PCRs, and your time and assistance is greatly appreciated.

Product Category Rules Developed By UL Environment

UL Environment can certify EPDs using existing PCRs created by any Program Operator. When no PCR exists for a product group or particular geography, UL Environment will work with stakeholders to create one, or address regionally specific requirements for PCRs created for another market. Below you will find PCRs and geographic-specific addenda created and published by UL Environment:

UL Environment/IBU Core PCR: Part A »

Bathroom Fittings

Builders Hardware » 4/23/ 2014 – 4/23/2019

Cladding Product Systems » 6/18/2015 – 6/18/2019

Commercial Steel Door and Frame PCR » 3/10/2015– 3/10/2020

Commercial Steel Door and Frame PCR: Appendix A »

Commercial Steel Door and Frame PCR: Annual Energy Calculator »

Hand Dryers (Global) » 7/13/2016 – 7/13/2021

Piping systems for use for sewage and storm water (under gravity): North American Addendum » 6/2014 – 6/2016, update planned

Power Inverter Products » 8/2017 – 8/2022

Printers and Multi-Function Printing Units » 4/2018 – 4/2023

Tires » 11/2017 – 11/2022

Transport Refrigeration Units (North America) » 4/2017 – 4/2022

Wire and Cable (NA Addendum) » 4/1/2014 – 3/31/2017

UL Environment PCRs Under Development

For information on participating on a PCR development committee, please contact

    • Part B: Asphalt Shingles, Built-up Asphalt Membrane Roofing and Modified Bituminous Membrane Roofing
    • Part B: Mechanical Insulation
    • Part B: Wood Building Products
    • Wood Pallets
    • Part B: Wall Protection and Covering Products
    • Part B: Metal Ceiling and Wall Products

For information on participating on a PCR development committee, please contact

UL Environment PCRs Under Public Review

There are currently no PCRs under review.

Please contact for information on reviewing a PCR posted for open consultation, for information on participating on a PCR development committee, or to be added to UL’s PCR distribution list.