Learn about EPDs | Guides, webinars and documentation

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The essentials

Ebook: Environmental Product DeclarationsGuide

Twenty pages on what EPDs are, how to create one and where the tool fits. Updated for Version 6.

Download the ebook

Version 6 at a glance4 pages

The release summarised for existing clients: what changed, what to expect and how to migrate.

Read the summary

Verification documentsReference

The independent verification report for the tool, and the Simplified Verification Report template your verifier uses.

Open documentation

The user guide, LCA model report and LCA database report are provided to licensed users inside the tool, on its reference documents screen.

Briefing notes

Getting EPDs right

Short, technical explainers on the questions specifiers and procurers ask most. Written for people who have to defend the numbers.

Can you compare two EPDs?

ISO 14025 sets strict conditions for comparability: the same product category and declared unit, equivalent system boundaries, data quality, allocation and calculation rules, and the same validity period. EN 15804 goes further and requires comparison at building level, or at sub-building level only when the excluded parts genuinely perform identically. In practice, two concrete EPDs are comparable only after you have converted both to a common functional unit, checked that transport and end-of-life modules are treated the same way, and confirmed that biogenic carbon and carbonation are handled consistently.

Where uncertainty comes from

Every EPD result carries uncertainty: measurement uncertainty in plant data, variability between production periods and sites, choices in background datasets, and the modelling assumptions written into the PCR. This is why a common methodology matters more than a single decimal place. Using one pre-verified sector model across your plants removes the largest source of unexplained variation, so differences you see between products are real rather than methodological.

Guides

Seven practical guides for your team

Short, printable guides that follow the tool screen by screen and the route to a published EPD. Read them in order the first time; keep 3, 4 and 6 open afterwards.

EPD fundamentalsGuide 1

What an EPD is, the standards ladder from ISO 14025 to the c-PCRs, life-cycle modules, indicators, programme operators and the kinds of EPD.

Download Guide 1 (PDF)

Your first EPD in Version 6Guide 2

From first login to a self-declaration and background report, screen by screen, with the decisions that matter flagged as you reach them.

Download Guide 2 (PDF)

Plant data checklistGuide 3

What to collect before you open the tool, who in your business holds it, the evidence to keep, and the traps that send an EPD back from the verifier.

Download Guide 3 (PDF)

Modelling referenceGuide 4

Every input section of the tool, module by module: materials, electricity mix, kiln fuels and emissions, waste, construction, recarbonation, end of life and module D.

Download Guide 4 (PDF)

Worked exercisesGuide 5

Aggregate, clinker, cement and concrete built in sequence with the figures used in GCCA training, touching every screen once.

Download Guide 5 (PDF)

From background report to published EPDGuide 6

Writing the EPD document, setting it up on the EPD Portal as a pre-verified-tool EPD, the simplified verification report, and publication.

Download Guide 6 (PDF)

Moving from Version 5.2 to Version 6Guide 7

For existing clients: what changed underneath, what to re-check, and a four-week migration plan inside the parallel run.

Download Guide 7 (PDF)

Learn

Everything you need to understand and produce EPDs.

Start here

The essentials

Webinars

Watch a session

An overview of EPDs and the GCCA EPD Tool

EPDs, the GCCA EPD Tool and the publication process

GCCA EPD Tool workshop