--- term: "EN 15804" aliases: ["EN 15804+A2", "EN 15804:2012+A2:2019", "EN 15804 A2"] category: Standard updated: 2026-09-08 canonical: https://verdatir.com/glossary/en-15804 publisher: Verdatir (https://verdatir.com) --- # EN 15804 > The European standard that provides the core Product Category Rules for Environmental Product Declarations of construction products and services, aligning them with ISO 14025 and the EU Product Environmental Footprint impact categories. EN 15804, titled "Sustainability of construction works — Environmental product declarations — Core rules for the product category of construction products", is the standard that every construction product EPD in Europe is built on. It was developed by CEN Technical Committee 350. ## The A2 amendment The current version is EN 15804:2012+A2:2019. Amendment A2 aligned the standard with the European Commission's Product Environmental Footprint (PEF) method: it expanded the set of impact indicators, introduced new characterisation methods, made the reporting of biogenic carbon explicit and changed which life-cycle modules must be declared. EPDs published under the earlier A1 version are not directly comparable with A2 EPDs. ## Modules EN 15804 divides the life cycle into modules: A1 to A3 (product stage), A4 and A5 (construction), B1 to B7 (use), C1 to C4 (end of life) and D (benefits and loads beyond the system boundary). Under A2 the default scope requires the product stage, the end-of-life modules and module D, with limited exceptions. ## Relationship to other standards EN 15804 implements ISO 14025 for construction products and is closely aligned with ISO 21930, its international counterpart. National and programme-specific sub-PCRs sit on top of it. ## Where Verdatir fits Verdatir's EPD rule set covers the EN 15804+A2 requirements clause by clause, including module coverage, indicator sets and biogenic carbon reporting, and highlights where a declaration follows the A1 rather than the A2 rules. ## Sources - [CEN — EN 15804:2012+A2:2019 Sustainability of construction works — Environmental product declarations](https://standards.cencenelec.eu/)