For a timber manufacturer, the useful question about EN 16485:2026 is which parts of the environmental product declaration (EPD) model need review. An EPD communicates product environmental information using life cycle assessment (LCA). Timber-specific rules help connect that model to the core construction-product rules in EN 15804.

What the new edition covers

The Polish Committee for Standardization catalogue records publication of PN-EN 16485:2026-09 on 21 September 2026. This national adoption is identical to EN 16485:2026 and replaces PN-EN 16485:2014-06. Its scope covers wood and wood-based construction products.

The European foreword of EN 16485:2026 identifies new system-boundary figures and examples, a co-product allocation proposal, a chapter on additional environmental information, and five informative and two normative annexes. These are useful starting points for a technical review; they do not replace reading the applicable provisions.

Start with the processes and co-products

Our practical recommendation is to trace the existing model from incoming material through processing to the finished product. Record where drying, finishing and any purchased intermediate products enter the calculation. Compare that process map with the new boundary examples before changing calculations.

Next, identify outputs such as sawn timber, chips and sawdust. Keep a record of quantities, destinations and the reasoning behind allocation: how inputs and environmental burdens are shared between outputs. Review the applicable allocation provisions with the LCA practitioner. A different modelling approach should have a documented basis; a new edition alone is not a reason to switch methods.

Prepare a focused evidence pack

We recommend collecting the following information before the review. This is a preparation checklist, rather than a complete statement of the standard’s requirements:

  • Product coverage: identify the species, product types, production sites and manufacturing routes represented by the declaration.
  • Physical properties: record density in kg/m³ and moisture content in %, including the measurement basis. These records help explain quantity conversions and differences between products.
  • Production inventory: reconcile purchased materials, energy use and production volumes for the chosen reporting period. Explain exclusions and unusual production conditions.
  • Co-product evidence: gather output quantities and supporting records for the allocation approach under consideration.
  • Model documentation: retain the process map, data sources, scenario assumptions and reasons for any revisions.

For grouped products, ask whether the available evidence supports the proposed coverage. Separate material or process differences from changes caused by the edition review. This makes the outcome easier to explain to a verifier and to customers using the declaration.

Agree the implementation route

Before commissioning an update, confirm the applicable edition and transition arrangements with the chosen EPD programme operator. National publication dates and programme arrangements answer different questions. Record the agreed basis for a new declaration or revision, together with any additional information needed.

Use the EPD search to locate product documents, then check their stated standards, units and coverage. Comparisons need a consistent assessment basis. To discuss publication of a timber declaration, contact EPD Portal.

Frequently asked questions

Does the new edition automatically invalidate my existing EPD?
A new edition alone does not determine that. Check the declaration’s status and the programme operator’s applicable transition arrangements.
Is EN 16485 a replacement for EN 15804?
It provides complementary rules for wood and wood-based construction products alongside the core construction-product rules.
What should I prepare first?
A clear process map, product coverage and traceable production and co-product records give the technical review a useful starting point.