Standard
ISO 21930
Also: ISO 21930:2017
The international standard providing core rules for Environmental Product Declarations of construction products and services, serving as the global counterpart to EN 15804.
ISO 21930 provides the core Product Category Rules for EPDs of construction products and services at the international level. Programmes outside Europe, and international manufacturers publishing in several regions, commonly declare conformance with ISO 21930 alongside or instead of EN 15804.
Scope
The standard defines the life-cycle stages and modules to be declared, the impact indicators, the treatment of biogenic carbon and the content of the declaration. It is built on ISO 14025 and ISO 14040/44 and was revised in 2017 to align more closely with EN 15804.
EN 15804 and ISO 21930
The two standards are closely harmonised but not identical: indicator sets, module requirements and some calculation rules differ in detail. An EPD that is valid under one is not automatically compliant with the other, and cross-recognition depends on the programme operator.
Where Verdatir fits
Verdatir maintains both rule sets so that a manufacturer publishing internationally can see exactly where a declaration meets ISO 21930, where it meets EN 15804+A2, and where the two diverge.
Sources and further reading
In practice
Verdatir turns the rules behind this term into automated checks with a reviewer in the loop.
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