Troldtekt’s current EPDs document the carbon footprint - Global Warming Potential (GWP) - during the life cycle of the acoustic panels. The EPDs were published by EPD Denmark in 2025 and 2026. They were prepared according to the standard EN 15804:2012+A2:2019.
The EPDs include three basic panels based on our three different binders:
The binders Troldtekt LEC and FUTURECEM have a lower carbon footprint than traditional white cement. LEC stands for Lower Embodied Carbon, so you achieve the smallest footprint by choosing Troldtekt acoustic panels with LEC.
Here you can see the environmental footprint of the three basic variants of unpainted Troldtekt acoustic panels. You can also see which life cycle phases we have calculated for.
Not all phases are mandatory to declare in all markets. As we sell Troldtekt products in a number of markets and want to ensure complete transparency regarding our products’ footprint, we have chosen to include and show all phases.
An EPD enables architects, contractors or developers to assess the environmental impact of various building materials, including Global Warming Potential (GWP), which shows the CO2e footprint of the material. Based on the various examples of data available in the EPDs, you can compare the pros and cons of different building materials in an informed manner.
When documenting your CO2e footprint, product-specific EPDs play a key role. In Troldtekt’s EPDs, the CO2e footprint is calculated as a total value measured over a service life of 50 years.
There are several things to be aware of when comparing EPDs for products. Here are four of the most important:
In 2021, it became a requirement for EPDs to be developed in accordance with the EN 15804+A2 standard. Nevertheless, it is worth noting that EPDs are generally valid for five years, so you will still encounter EPDs that have been drawn up in accordance with the previous standard, EN 15804+A1, up until mid-2027.
Manufacturers may publish different EPDs for different products, just as new product updates may not yet be included in the EPD.
It's important to compare the same phases in a product's life cycle when looking at data. Please note that EPDs that have been drawn up in accordance with the old standard (EN 15804+A1) may include fewer phases than more recent EPDs (EN 15804+A2). This can make it difficult to compare data. EPDs based on EN 15804:2013 are also not directly comparable to EPDs based on EN 15804:2012+A2:2019 due to updated calculation methods.
The ‘declared unit’ in EPDs may vary. At Troldtekt, we use square metres as the unit, making it easy to calculate the footprint based on the overall ceiling area. In other EPDs, data may be calculated by things like product weight.
Product-specific EPDs like those we use at Troldtekt describe how a specific building material affects the environment. However, if there is no EPD available for the exact building material you intend to use, you can either choose a so-called industry EPD based on averages for a type of building material or use generic data from a database.
If possible, you should always choose product-specific EPDs, as they provide the most accurate data.
Normally, the manufacturer of the building material prepares the EPD. The declaration is based on a comprehensive life cycle analysis, which, in the case of Troldtekt, has been prepared by the external LCA Consultant. Stefan E. Danielsson.
Troldtekt’s EPDs were published by the Danish organisation EPD Denmark and were third-party verified by one of the independent verifiers affiliated with EPD Denmark. This means that we use two different external parties to prepare and verify our EPDs.
As a consultant or installer, you can enter a given amount of Troldtekt acoustic panels into an overall digital life cycle calculation of the environmental footprint of a building project. The digital format saves time compared to manual entry and also minimises the risk of errors.
At EPD Denmark, the EPDs are available in a format that can be imported directly into the digital tool in LCAbyg.
The tables showing the results of the life cycle analysis are a key element of the EPDs. Here, the footprint of the products in different life cycle phases is shown using different units depending on whether we are looking at carbon footprint, acidification, energy consumption or something else.
Column 1 shows what the figures express. One example is GWP, which stands for Global Warming Potential. The abbreviations are explained under each table.
Column 2 shows the unit of measurement used. For GWP, the unit is ‘kg CO2-Eq.’, which stands for carbon dioxide equivalent per declared unit of building material. The figure includes all greenhouse gases and the different environmental footprints are converted to a comparable (equivalent) value.
The other columns show which of the building material’s life cycle phases the value relates to. The numerical values in the tables are often expressed in scientific figures. E+ means that zeros must be added after the number and E- means that zeros must be added before the number (decimal number). Finally, E+0 means that the number prefix is the real value. This is demonstrated here in three examples:
While EPDs are effective tools for obtaining an overview of a building material’s environmental impact during different phases of the life cycle, the phases must always be viewed in context. Among other things, in an EPD, the sum of biogenic CO2e must always be zero. This means that the CO2e stored in the product in one phase must be released again in a later phase (the method is called -1/+1).
Biogenic CO2e covers the carbon dioxide that forms part of the biological carbon cycle and is stored in biobased raw materials such as wood. Conversely, fossil CO2e comes from oil, coal and gas.
Let’s use Troldtekt as an example:
> I The raw materials used in Troldtekt’s acoustic panels are wood and cement. While cement production results in significant CO2e emissions, the opposite is the case for wood, as carbon is stored in the wood when the tree is growing. This is biogenic CO2e.
> The combination of wood and cement gives Troldtekt a relatively low CO2e footprint during the raw material phase and, as we mainly use carbon-neutral energy types in production (wind power and biofuel from our own burner), the overall CO2e footprint is below zero in the product phase, A1-A3.
> However, biogenic CO2e is released from the wood again at the end of the service life and phases C3/C4 therefore have a positive CO2e footprint. Overall, the raw material wood is therefore carbon-neutral in the life cycle calculation.
There are significant differences between national regulations, and it is important that you familiarise yourself with the regulations in the market where you are building. In some countries, such as Denmark, an upper limit has been set for the CO2e footprint of new buildings. The limits may be different or non-existent in other markets.
When calculating a building’s life cycle assessment (LCA) in accordance with national regulations, you must also be aware of which EPD phases may be included. Typically, phase D cannot be included in the LCA calculation.
You should also note that in some countries it is practice to calculate the building’s total CO2e footprint per square metre measured over 50 years, while in other countries it is practice to convert to an annual CO2e footprint per square metre. In the EPDs, the footprint of Troldtekt panels is calculated over 50 years and must be divided by 50 when converting to an annual footprint per square metre.
Finally, there are some markets where the biogenic CO2e is completely excluded from the LCA calculation. This applies, for example, to Sweden and Norway. Instead of using the method -1/+1 described in the point above, the 0/0 principle applies here. The total life cycle footprint of a Troldtekt panel remains the same overall, regardless of which of the two methods you use, but it is distributed differently across the individual phases.