Product Category Rules (PCR)

Product Category Rules (PCR) are consensus-based technical documents that set out the specific rules for carrying out a Life Cycle Assessment (LCA) and drafting an Environmental Product Declaration (EPD) for a given product category.

Their goal is to ensure that EPDs from different manufacturers are comparable, rigorous and transparent. Without harmonised PCR, each company could choose different system boundaries or indicators, and the ability to compare would be lost.

Relationship with standards and programmes

• ISO 14025: defines Type III EPDs based on verified LCA and requires PCR to guarantee comparability.
• EN 15804+A2: the core PCR for construction products in Europe; sector-specific sub-PCR (concrete, steel) must align with it.
• ISO 21930: the international counterpart for construction products.
• EPD programmes: operators such as The International EPD System, GlobalEPD, IBU and UL publish PCR and host verified EPDs.
• The ESPR Regulation and the Digital Product Passport (DPP) are expected to rely on environmental information drawn from EPDs prepared under recognised PCR.

Typical structure of a PCR

• Scope and category: a clear description of the product or service.
• Functional unit and reference period.
• System boundaries (cradle-to-gate, cradle-to-grave and similar).
• Allocation and recycling rules (substitution method, 50/50, cut-off).
• Data requirements: primary versus secondary data, with temporal and geographical quality.
• Impact assessment method: the list of indicators (fossil, biogenic and land-use GWP, water scarcity, abiotic depletion and others).
• Reporting format: results tables, uncertainty and additional information.
• Verification procedure: independent third-party review.
• Validity: typically around five years.

Step-by-step development process

1. Proposal: a sector association or manufacturer asks the EPD programme to create or revise a PCR.
2. Multi-stakeholder working group: manufacturers, NGOs, academia and standardisation bodies prepare the draft.
3. Public consultation: usually open for a set period (often at least 60 days), with comments incorporated.
4. Technical panel review: ensures consistency with ISO 14025 and relevant sector standards.
5. Publication: the official version is released with a number and date and can be used to generate EPDs.
6. Update: typically every few years, or sooner if there are significant technological changes.

Benefits for companies and buyers

• Credibility: PCR-based, verified EPDs are accepted in public tenders (Green Public Procurement) and in schemes such as LEED and BREEAM.
• Market access: large retailers and manufacturers increasingly require comparable EPDs.
• Risk reduction: following transparent rules helps avoid accusations of greenwashing.
• Continuous improvement: PCR fix the indicators that make benchmarking and reduction roadmaps possible.

How to take part in a PCR

• Join the working groups of the EPD programme and propose changes that reflect low-carbon or low-water innovations.
• Engage in the public consultation with scientific evidence to avoid excessive or outdated requirements.
• Fund sector LCA studies that provide high-quality primary data.

Emerging trends

• Digital PCR and EPDs: machine-readable formats compatible with BIM and the Digital Product Passport.
• Biodiversity indicators: growing interest in adding metrics such as Mean Species Abundance (MSA).
• Links with CBAM: as the Carbon Border Adjustment Mechanism matures, embedded-emissions data for products such as steel and cement is becoming more standardised, which is likely to reinforce the role of PCR-based reporting.

Product Category Rules are the foundation of environmental transparency in B2B markets. With the arrival of the ESPR Regulation and the Digital Product Passport, having EPDs based on robust PCR is set to become a condition of access to the European market, not just a competitive advantage. At Manglai we help companies measure their product and organisational footprint and prepare credible environmental declarations. Discover how Manglai can help you.