Solid Hardwood EPD & HPD, Explained What it means • How it's reported • Why it matters
EPDs (Environmental Product Declarations) and HPDs (Health Product Declarations) are transparency documents that disclose environmental impacts and material ingredients. They are disclosure tools — not sustainability certifications. Reference-only: no product recommendations.
EPDs report lifecycle environmental impacts (carbon, energy, water, waste); HPDs disclose product ingredients and health hazard screening. Both are required by LEED v4 for specific credits. Neither is a sustainability rating — both are disclosure frameworks.
What it is
EPD (Environmental Product Declaration): A standardized document that reports the results of a lifecycle assessment (LCA) conducted per ISO 14040/14044 and published under a specific Product Category Rule (PCR). EPDs disclose environmental impact categories including global warming potential (GWP, or "carbon footprint"), ozone depletion, eutrophication, acidification, smog formation, and primary energy use. A third-party verifier reviews the EPD for accuracy and consistency before publication.
HPD (Health Product Declaration): A standardized document developed by the HPD Collaborative that discloses a product's ingredients and the results of hazard screening against databases such as GreenScreen. HPDs list substances present in a product above specified thresholds (typically 1000 ppm) and flag any substances with known health hazards. They are not a guarantee of ingredient safety — they disclose what is present.
Solid hardwood has relatively straightforward ingredient profiles — primarily wood, finish, and any adhesives — compared to composite flooring products. However, finishes (UV-cured urethane, oil finishes) and any adhesives used in installation contribute to the HPD ingredient picture.
How it's reported
EPDs are published to the manufacturer's website or to registries like the UL Product Lens or EC3 database. They include a validity period (typically 5 years) and a system boundary declaration describing which lifecycle stages are included (cradle-to-gate, cradle-to-gate with options, or cradle-to-grave).
HPDs are published to the HPD Collaborative's public repository. Project specifications may require HPDs to include all ingredients down to 100 ppm (for stricter programs) or 1000 ppm (standard). HPD "Nest" certification indicates the HPD was verified by a third party.
LEED v4 MRc2 (EPD credit) and MRc4 (HPD credit) each require EPDs and HPDs for at least 20 permanently installed products to earn the credit. For MRc2, products must represent at least 20 different products using 5 different manufacturers. Industry-wide EPDs count — meaning the AHFA hardwood flooring EPD enables many products to contribute to the credit without product-specific documents.
Why it matters
On projects targeting LEED v4, WELL Building Standard, or similar certifications, EPDs and HPDs are often required documents that must be submitted as evidence. Specifying products without EPDs or HPDs can create compliance gaps for these credits, which may need to be filled with alternative products.
Even for non-certification projects, increasing numbers of institutional owners, healthcare systems, and federal agencies require EPDs and HPDs as part of responsible procurement policies. Having access to these documents at the time of specification — rather than during construction — streamlines the submittals process.
For solid hardwood specifically, domestic US species often benefit from the AHFA industry-wide EPD, which provides a starting point for LEED credit documentation. However, owners requiring product-specific EPDs (which reflect a single manufacturer's actual production data) may need to confirm document availability with each manufacturer.
FAQ
Does an EPD certify that a product is sustainable? ⌄
No. An Environmental Product Declaration (EPD) discloses lifecycle environmental impact data — it does not rate, judge, or certify that a product is sustainable. Two products can both have EPDs where one has significantly higher global warming potential than the other; both have disclosed, neither is "certified sustainable" by the EPD itself. EPDs are transparency documents that enable informed comparisons. Project teams use EPDs to evaluate products against sustainability goals, but the EPD itself makes no sustainability claim.
Are HPDs required for every flooring project? ⌄
Only if the project's sustainability requirements specifically call for them. Health Product Declarations (HPDs) are commonly required on projects pursuing LEED v4 credits — specifically MRc4 (Building Product Disclosure and Optimization – Material Ingredients), which awards points for products with HPDs disclosing all ingredients down to 1000 ppm. HPDs are also used in WELL Building Standard projects and by organizations with health-focused procurement policies. Non-certification projects typically don't require HPDs unless specified by the owner.
Do EPDs or HPDs affect a product's durability or performance? ⌄
No. EPDs and HPDs are transparency and disclosure documents — they report data about environmental impacts and material ingredients, respectively. They have no connection to how well a product performs, how long it lasts, or how durable the finish is. A product with an EPD and HPD is not inherently better or worse as a flooring material than one without; the presence of disclosure documents reflects manufacturing transparency, not product quality.
What is the difference between a product-specific EPD and an industry-wide EPD? ⌄
A product-specific EPD covers a single manufacturer's product or product line, using that company's actual production data for the lifecycle assessment. An industry-wide EPD (also called a category or sector EPD) covers the average impact for a category of products — for example, the AHFA Hardwood Flooring Industry-Wide EPD covers domestic solid hardwood as a category. LEED v4 accepts industry-wide EPDs when product-specific EPDs are unavailable, but product-specific EPDs are more precise and may be required by some owners or certification programs.
Related specs
This page provides general reference information about EPDs and HPDs for solid hardwood flooring. It does not constitute installation advice, professional recommendations, or endorsement of any product.