In modern construction, transparency about product environmental impacts has shifted from a differentiator to an expectation. Builders, architects, and specifiers increasingly need verified data to support sustainability claims and meet green building certification requirements. One of the most powerful tools for achieving this transparency is the combination of Product Category Rules (PCRs) and Environmental Product Declarations (EPDs). These frameworks provide standardized, third-party verified information about the lifecycle impacts of building products. For professionals working with builders hardware, understanding how PCRs and EPDs apply to products such as locks, latches, exit devices, door closers, and hinges is essential for making informed specification decisions. This guide explains what PCRs and EPDs are, how they apply to builders hardware, and why they matter for sustainable material selection and specification strategies in residential and commercial construction.
What Are Product Category Rules and Environmental Product Declarations?
Product Category Rules (PCRs) and Environmental Product Declarations (EPDs) are complementary tools that bring scientific rigor to the evaluation of construction materials. PCRs define the rules and requirements for conducting lifecycle assessments (LCAs) within a specific product category. They establish consistent methodologies for data collection, impact assessment, and reporting so that EPDs from different manufacturers can be compared on an apples-to-apples basis.
Product Category Rules (PCRs)
A PCR is a standardized document that specifies how an LCA should be conducted for a particular category of products. It identifies which environmental impacts must be measured, what system boundaries apply, and how data should be reported. PCRs are developed according to ISO 14025, which governs Type III environmental declarations.
Key Elements of a PCR
A well-constructed PCR includes the following elements:
- Product category definition A clear description of which products fall under the rules
- System boundaries Whether the assessment covers cradle-to-gate, cradle-to-grave, or cradle-to-cradle
- Impact categories Which environmental indicators must be reported such as global warming potential, ozone depletion, acidification, and resource depletion
- Data quality requirements Standards for the age, geographic relevance, and precision of the data used
- Allocation rules How to apportion impacts when a manufacturing process produces multiple products
Environmental Product Declarations (EPDs)
An EPD is a verified document that reports the environmental performance of a specific product based on the rules defined in the relevant PCR. Think of a PCR as the recipe and the EPD as the finished dish with full nutritional information. EPDs enable design professionals and builders to:
- Compare the environmental footprints of competing products within the same category
- Contribute points toward green building certification programs such as LEED v4 and v5
- Support corporate sustainability reporting and procurement policies
- Demonstrate regulatory compliance in markets with environmental disclosure requirements
EPDs are typically valid for five years and must be reviewed and updated if significant changes occur in the manufacturing process or material sourcing.
PCRs and EPDs for Builders Hardware
The Builders Hardware Manufacturers Association (BHMA) has taken a leadership role in developing PCRs for key builders hardware categories. These PCRs were developed in collaboration with Underwriters Laboratories (UL), a global safety science organization with deep expertise in environmental assessment and certification. Together, BHMA and UL created PCRs that cover the major product groups within the builders hardware sector.
Product Categories Covered
The BHMA PCRs address five primary categories of builders hardware:
| Product Category | Common Applications | Typical Materials |
|---|---|---|
| Locks and Latches | Entry doors, interior doors, security gates, cabinet locks | Steel, brass, zinc alloys, stainless steel, nylon |
| Exit Devices | Emergency exits, fire-rated doors, commercial egress paths | Steel, aluminum, stainless steel |
| Door Closers | Commercial entrances, fire doors, high-traffic interior doors | Steel, cast iron, aluminum, hydraulic fluids |
| Hinges | Entry doors, interior doors, heavy-duty commercial doors, cabinetry | Steel, brass, stainless steel, bronze |
How BHMA PCRs Support Manufacturers
For manufacturers of builders hardware, having a published PCR eliminates the guesswork from creating an EPD. The PCR specifies exactly what data must be collected, how it should be measured, and what impact categories must be reported. This consistency benefits manufacturers in several ways:
- Reduced duplication of effort All manufacturers in the category follow the same rules, so each company does not need to develop its own methodology
- Market credibility EPDs based on recognized PCRs carry more weight with specifiers and certification bodies
- Competitive benchmarking Manufacturers can identify opportunities to reduce environmental impacts relative to category averages
- Future preparedness As green building codes increasingly reference EPDs, manufacturers with verified declarations are ahead of compliance requirements
The BHMA PCRs were developed in accordance with ISO 14025 and follow the program operator rules established by UL. This dual alignment ensures that EPDs created under these PCRs are recognized across North American and international markets.
Using PCRs and EPDs in Construction Specification
For architects, specifiers, and builders, EPDs are practical tools that support better material decisions. When incorporated into project specifications, they create a clear framework for evaluating and selecting building products based on performance, code compliance, and environmental impact.
Integrating EPD Requirements into Specifications
Specifying EPD requirements in construction documents does not need to be complicated. A typical specification approach includes:
- Mandate EPD submittals Require manufacturers to submit product-specific EPDs as part of the submittal process for specified products
- Define acceptable program operators Specify which EPD program operators (such as UL Environment, ASTM, or NSF International) are acceptable
- Set performance thresholds Where available, establish maximum global warming potential or other impact limits for key product categories
- Request manufacturer-specific data Require EPDs that are specific to the actual product being supplied, not industry-average declarations
- Include verification requirements Specify that EPDs must be third-party verified and list the accredited verifier
EPDs and Green Building Certification
EPDs contribute directly to several green building certification systems. Under LEED v4 and v5, the Building Product Disclosure and Optimization (BPDO) credit rewards projects that use products with EPDs. Points are available for both the number of EPDs submitted and the use of products with optimized environmental performance. Similar credits exist in the International Green Construction Code (IgCC), the National Green Building Standard (NGBS), and the Living Building Challenge.
Practical Considerations for Specifiers
When evaluating EPDs for builders hardware, specifiers should pay attention to several factors to ensure they are comparing products fairly:
- Declared unit Verify that all EPDs being compared use the same declared unit (for example, per product unit versus per kilogram)
- System boundary Check whether the EPD covers cradle-to-gate or cradle-to-grave, as this dramatically affects the reported impacts
- Data vintage Confirm that the underlying LCA data is current, ideally collected within the last three to five years
- Product scope Ensure the EPD applies to the specific model or series being specified, not a generic product family average
The Future of Environmental Declarations in Construction
The availability of PCRs and EPDs for builders hardware represents an important milestone in the construction industry sustainability journey. As the demand for sustainable housing and verified green building practices continues to grow, EPDs will become standard requirements rather than optional differentiators.
Emerging Trends
Several developments are shaping the future of environmental declarations in the construction industry:
- Digital EPDs Machine-readable EPD formats are being developed to enable automated data integration into building information modeling (BIM) platforms and specification software
- Expanded product coverage More product categories within the builders hardware sector are expected to receive PCRs, covering everything from electronic access control systems to specialty architectural hardware
- Harmonization across regions Efforts are underway to align PCR requirements across North America and Europe, reducing the burden on global manufacturers and making cross-border comparisons more reliable
- Integration with embodied carbon regulations Policy initiatives in states such as California, Minnesota, and New York are beginning to set maximum embodied carbon limits for construction materials, making EPDs a compliance tool
What Builders and Specifiers Should Do Now
For professionals who specify builders hardware, the availability of BHMA PCRs and manufacturer EPDs creates an immediate opportunity to strengthen sustainability practices. Start by reviewing which hardware products on your current projects already have EPDs available. Request EPD submittals from your regular suppliers and compare environmental performance alongside cost, durability, and code compliance. Use the BHMA PCR document as a reference to understand what data each EPD contains and how to interpret it correctly.
As the exterior door product market continues to evolve with new materials and performance benchmarks, having EPD data available for hinges, locks, and closers ensures that the entire door assembly can be evaluated on its environmental merits. This holistic view of product sustainability is exactly what green building certification programs reward and what informed buyers increasingly demand.
By understanding PCRs and EPDs now, builders and specifiers position themselves at the forefront of a trend that will only accelerate. The frameworks are in place, the standards are published, and the data is becoming available. The question is not whether EPDs will matter for builders hardware, but how quickly the industry will adopt them as a baseline expectation for every construction project.
For more guidance on integrating sustainable product data into your building specifications, explore our comprehensive guide to green building insights and sustainable construction trends backed by real market data.