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How to read EPD for flooring without trusting averages
How to read EPD for flooring by checking its unit, product scope, life-cycle modules, PCR and verifier before comparing an industry average.
What to take away
- Most US flooring EPDs are industry averages, so the published figure describes a group of plants rather than the sheet you are about to buy.
- Compare impacts per square meter per year of declared service life, not per square meter alone.
- Check which lifecycle modules are included. A cradle-to-gate declaration stops at the factory gate.
- US declarations use TRACI impact categories. Canadian and European ones use EN 15804, and the numbers are not interchangeable.
- LEED v4 measures products against an industry average, which is exactly why that average needs careful reading.
How to read EPD for flooring: start with the declared unit, then check product scope, lifecycle modules, and verification before comparing impact figures.
What is being compared
Three documents get filed under the same name. An industry-average declaration pools data from several plants and often from several products, so one vinyl plank EPD may cover everything from a thin wear layer to a heavy one.
Three EPD Types Compared
Industry average
- Data source
- Pooled plants and products
- Scope
- Several products
- Standard
- ISO 14025 Type III
- Difference
- Representativeness
Manufacturer
- Data source
- One company, several sites
- Scope
- One company
- Standard
- ISO 14025 Type III
- Difference
- Representativeness
Plant specific
- Data source
- One line, one address
- Scope
- One factory line
- Standard
- ISO 14025 Type III
- Difference
- Representativeness
A manufacturer-specific declaration stays inside one company, while a plant-specific declaration covers one line at one address. All three are Type III declarations under ISO 14025, and all three pass through a program operator such as UL Environment, NSF International, SCS Global Services, ASTM International, or ICC-ES. The EPD should name its third-party verifier; cross-check the verifier and declaration against the operator's published record, or ask the operator to confirm them. The difference is representativeness, not legitimacy. The reference entry on environmental product declarations sets out the types and the verification chain.
For North American flooring, one PCR to check is UL Environment's Product Category Rules for Building-Related Products and Services, Part B: Flooring; use the PCR and version named in the declaration, since requirements can vary. American declarations commonly report TRACI categories: global warming, acidification, eutrophication, smog formation, and ozone depletion. Canadian and European declarations follow EN 15804 and report a different indicator set, so a TRACI acidification figure and an EN 15804 acidification figure do not sit on the same scale.
The criteria that matter
The declared unit is the first filter. Many US flooring EPDs report impacts per square meter of finished product, without adhesive, underlayment or packaging.
EPD Criteria by Declaration Type
Industry average
- Data source
- Pooled plants and products
- Declared unit
- Per square meter, sometimes per year
- Modules
- Usually A1 to A3
- Best used for
- Screening a category
Manufacturer
- Data source
- One company, several sites
- Declared unit
- Per square meter
- Modules
- A1 to A3, sometimes A4 and C
- Best used for
- Choosing between brands
Plant specific
- Data source
- One line, one address
- Declared unit
- Per square meter
- Modules
- A1 to A3
- Best used for
- Auditing a supplier claim
Divide the headline figure by the declared reference service life. That figure is often 10 years for resilient sheet and 20 to 25 for solid wood. Cradle-to-gate global warming values for resilient flooring commonly sit in an illustrative 5 to 25 kg CO2e per square meter, a range wide enough to hide the useful part.
When comparing three flooring quotes, use the same declared unit and service-life assumption for each; the eco friendly flooring checklist can help organize those comparisons.
Industry average
- Data source
- Pooled plants and products
- Declared unit
- Per square meter, sometimes per year
- Modules
- Usually A1 to A3
- Best used for
- Screening a category
Manufacturer
- Data source
- One company, several sites
- Declared unit
- Per square meter
- Modules
- A1 to A3, sometimes A4 and C
- Best used for
- Choosing between brands
Plant specific
- Data source
- One line, one address
- Declared unit
- Per square meter
- Modules
- A1 to A3
- Best used for
- Auditing a supplier claim
Option by option
Use these four checks in order:
- Product and scope:Note the exact product, plant or region, and products covered. Identify the PCR and its version.
- Unit and service life:Record the declared unit and reference service life. Compare per square meter only when the products and functions are comparable; use the same service-life basis when screening annualized impacts.
- Lifecycle modules:Confirm which stages are included. A1–A3 cover product materials and manufacturing, A4 covers transport to the project, B covers the use stage, and C covers end of life.
- Impacts and verification:Compare the same impact category under the same method, then find the named third-party verifier and check the declaration in the program operator's record.
To find a document, search EC3, UL SPOT, ASTM's EPD program, or the International EPD System's library, Environdec; listings vary by operator. For a real practice document, use a current Interface carpet-tile EPD from Interface's published EPD materials, then check that the product and plant scope match the floor under consideration.
Four Checks for Flooring EPDs
- Write down declared unit and reference service life
- List modules included; treat A1 to A3 as product only
- Identify impact methodTRACI or EN 15804
- Record data year and program operator validity window
A cradle-to-gate declaration says nothing about transport to the job, adhesive, or end of life, and those stages can matter for a hard surface. The advice on choosing a sample in products worth testing is relevant here: assess the material you intend to install, not just its headline EPD number.
Where each one wins
An industry average is the right answer when you are screening a category, or when no product-specific data exists. It is also the benchmark behind the LEED v4 credit language, so specifiers cannot avoid it.
The U.S. EPA page Volatile Organic Compounds' Impact on Indoor Air Quality belongs beside any declaration. An EPD reports modeled environmental impacts, while the chemistry of a floor in a room is a separate measurement; VOC testing answers that indoor-air question.
A manufacturer EPD wins when two shortlisted brands compete and you want one clean comparison. A plant-specific EPD wins when a supplier makes a claim about one factory, or when a single production line feeds several projects.
The LEED v4 credit for building product disclosure gives a point where at least 20 permanently installed products from five manufacturers carry EPDs. Further points follow where products beat their industry average across three or more impact categories.
What none of them solve
No EPD covers installation quality, cleaning regime, wear, or how long a floor actually lasts. Module B, the use stage, is frequently excluded, even though that is the part deciding how a floor looks in ten years. The same boundary question matters for recycled interior surfaces: check what the declaration includes before comparing materials.
Underlayment, adhesive and trim sit outside the boundary too, and cork underlayment brings impacts of its own. Averages also move. A plant that switches fuel can shift the pooled figure at the next revision, so a declaration published in 2019 may not describe today's production.
