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Edition and corrigendum
Genorma lists EN 15804:2012+A2:2019 as published and confirmed. It also lists AC:2021 as a published corrigendum. The EVS catalogue identifies both among the base documents. Ask whether the purchased copy incorporates that corrigendum; the corrigendum record is not a complete replacement for the standard.
The public scope provides core product category rules for Type III environmental declarations. It addresses life-cycle coverage, scenarios, data and conditions for product comparison. Social and economic product performance are outside its stated scope. Keep these boundaries visible when defining the assignment.
Choose the rules for the actual declaration
| Decision | Why it matters | Question for the provider |
|---|---|---|
| Core rules | Identify the shared construction-product framework. | Which amended and corrected EN 15804 reference will be used? |
| Product category and programme | Additional rules can shape the specific declaration. | Which complementary rules and programme instructions apply? |
| Product and production coverage | A declaration may represent a specific or wider product set. | Which products, sites and data periods are included? |
| Intended comparison | Results need a justified basis for comparison. | What units, life-cycle coverage and scenarios support the proposed use? |
Write down the audience for the declaration. A manufacturer preparing information for customers, a specifier collecting product data and a building assessor integrating that data may need different explanations, even when the same core document is relevant. State the deliverables expected from the provider: the declaration, supporting study, verification arrangement and publication responsibility, as applicable to the chosen programme.
Ask how the actual product category is handled. A quotation that names EN 15804 without identifying complementary category rules or programme requirements may leave significant scope unresolved. Let the provider explain the chosen set and its editions. This guide does not assume that one category's rules apply to another or that a draft category project can substitute for published requirements.
Build a comparison sheet before selecting a product
When comparing declarations, first record what each one represents. Include the product identity, declared basis, life-cycle coverage, geographical or production coverage and important scenario assumptions described in the documents. Then ask the qualified assessor whether the proposed comparison is meaningful for the project. A single numerical column can conceal differences that change the decision.
A declaration for a broad product average may answer a different question from one for a particular plant or model. Likewise, a result presented for one quantity should not be compared directly with another quantity without a justified conversion and application context. Have the assessor explain the basis rather than let procurement invent a convenient arithmetic rule.
Keep environmental information separate from other product requirements. A declaration can provide data for the environmental assessment without settling structural suitability, fire performance, durability or installation compatibility. Put those requirements in their own acceptance columns so an attractive environmental result does not displace the product's required function.
Questions before commissioning an EPD
- Which exact products, variants, factories and reporting period will the assignment cover?
- Which core, complementary and programme rules are selected, with what editions?
- Who provides primary data, checks its coverage and resolves missing information?
- What declaration, supporting information, verification and publication deliverables are included in the fee?
- How will a product or process change be reviewed after publication?
A fictional comparison decision
A contractor receives two insulation offers, each with an EPD and a headline environmental figure. One declaration represents a broad product range, while the other identifies a particular product and a different declared basis. The buyer initially sorts the offers using the headline figures alone.
The project assessor creates a comparison sheet and checks product coverage, units and scenarios against the actual application. Procurement retains the performance specification and requests the information needed for a justified environmental comparison. The fictional decision is to establish comparability first; it does not identify a greener product or provide a life-cycle calculation.
Buy the core rules and check the correction
Related corrigendum record: EN 15804:2012+A2:2019/AC:2021. Confirm the seller's included corrections, language, licence and checkout terms.
Common buying questions
Does an EPD prove that a product is environmentally best?
A declaration provides information within its stated coverage. A comparative claim needs a justified assessment of the products and intended application.
Is EN 15804 always the only document to buy?
Ask about complementary product-category rules and the chosen programme. The assignment may require a wider document set.
Does it replace technical product standards?
No. Keep the environmental assessment connected to, but distinct from, the product's other required performance.
Public catalogue sources checked on 7 October 2026. See the material standards overview for related product-document decisions.
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