Article: Everything You Need to Know About EN 15804+A2

In 2012, the European Union laid down the groundwork for environmentally conscious construction by introducing the EN 15804 norm. This norm established guidelines for the construction sector on creating Environmental Product Declarations (EPDs). In July 2019 it was revised and updated to EN 15804 + A2, replacing the old EN 15804 + A1 version. Compliance with A2 has been mandatory since 2022.

But why does EN 15804 matter? EN 15804 aims to unify the process of creating environmental impact measures in order to make them comparable. This was done by introducing rules on how data is collected, reported verified, and presented.

Now, let’s dive into the enhancements brought about by EN 15804 + A2. In the previous version, reporting obligations included seven impact categories. The updated norm, however, expands the mandatory reporting to thirteen core environmental impact categories, along with several optional ones. Furthermore, certain existing impact categories now employ revised calculation methodologies such as the Module “D”.

For instance, the indicator “Global Warming Potential” previously used in the EN 15804 + A1 standard was divided into three categories: Climate Change Fossil, Climate Change Land Use and Land Change, and Climate Change Biogenic Removal and Emissions. Under EN 15804 + A2, Climate Change Total sums up all these three categories and is thus equivalent to the “Global Warming Potential” in the old version. This means that products need to specify both the cradle-to-gate and end-of-life phases, as well as external impacts beyond the system boundaries. The minimum requirements apply to all products in Modules A1-A3, C1-C4, and D. Below, you can find a comparison between all mandatory impact categories of both versions of EN 15804: