CONSTRUCTION PRODUCTS REGULATION · EN 15534
CE Marking WPC Construction Products: The EN 15534 Route Explained
CE marking for WPC construction products is governed by the Construction Products Regulation (CPR) (EU) No 305/2011, and the standard family that applies to wood-plastic composites is EN 15534. The point most pages skip: the decking and cladding parts — EN 15534-4 and EN 15534-5 — are European Standards but are not harmonised under the CPR.
The CE route for WPC decking and cladding is therefore a European Technical Assessment (ETA), not a plain Declaration of Performance drawn against the standard. Ask for the ETA, the DoP, and the notified-body number — then check that number against the NANDO register.
BUYER’S CHECKLIST
What to Ask a WPC Supplier Before You Import
The buyer’s question underneath this whole topic is simple: “The supplier says CE. What do I ask to see?” Work through the six steps in order — the last one is what separates buyers who get burned from the ones who do not.
01
Ask for the ETA and the DoP
For WPC decking and cladding, the route is the ETA, and the DoP is built on it. Ask for both, and check that the product name on the document matches the product on your order. A family name is not enough — the document must name the specific profile.
02
Check the Standard or EAD Reference
The document must state which European Assessment Document the ETA was issued against. “EN 15534” on its own is not enough — the part number and the EAD reference are what show the assessment was issued for the product type you are buying.
03
Note the Notified-Body Number
This is the four-digit identification number of the body that issued the assessment. A DoP that is missing the notified-body number — or the standard reference, or the performance table — is not a complete document.
04
Verify Against the NANDO Register
Check the number against the European Commission’s NANDO database of notified bodies. This is the step that catches a photocopied certificate. A document you have not verified against the issuing register is a piece of paper, not a compliance record.
05
Ask for the Declared Fire Class
Request the EN 13501-1 classification, stated, with the test report behind it. “Fire rated” without a class tells you nothing — a supplier who will not name the class and the standard is not answering your question.
06
Confirm the DoP Is Current
The new CPR (EU) 2024/3110 moves toward a digital DoP and lot-level traceability. Confirm the document reflects the regulation that applies to your shipment, and confirm the phase-in dates against the current legal text.
STANDARD MAPPING
The EN 15534 Standard Family: Which Part Applies to Which Product
EN 15534 is the European standard family for wood-plastic composites. It splits by product, which is why “CE marking for WPC” is never one answer — the part that applies depends on what you are buying, and on whether that part is harmonised.
HOW TO READ THIS TABLE
The mapping below is a market map, not a Yuheng claim. It shows, for each product family, which standard applies, whether CE marking is in scope, and which document proves the claim. Two things to read out of it: CE marking is an exterior-construction question, and for WPC decking and cladding the document is an ETA, not a DoP drawn directly against EN 15534.
PRODUCT FAMILY MAPPING
CE Marking Status by WPC Product Family
Market Map
| Product Family | Applicable Standard | CE Marking in Scope? | CE Route | Document to Ask For |
|---|---|---|---|---|
| WPC decking (outdoor) | EN 15534-4 | Yes — construction product | ETA (part not harmonised) | ETA + DoP |
| WPC cladding (outdoor) | EN 15534-5 | Yes — construction product | ETA (harmonisation not achieved) | ETA + DoP |
| WPC fencing (outdoor) | EN 15534-6 | Yes — construction product | ETA (part not harmonised) | ETA + DoP |
| Reaction to fire (all exterior WPC) | EN 13501-1 | Stated within the ETA/DoP | Fire class declared in the document | Fire classification report |
| Interior WPC and acoustic panels | ISO 354 (acoustic) | No — decorative/interior, outside CPR scope | Not CE marked | Test report only |
01
Harmonised Standard (hEN) Route
When a European Standard is harmonised under the CPR, the manufacturer draws up a Declaration of Performance against it and affixes the CE mark. The DoP is the document.
02
European Technical Assessment (ETA) Route
When no harmonised standard covers the product, the manufacturer obtains an ETA issued against a European Assessment Document. The ETA, plus the DoP built on it, is the document.
STANDARD FAMILY
What Each Part of EN 15534 Covers
EN 15534 splits by product. The part that applies to your shipment is the one that names your product type — and the part number is what the ETA must reference.
| Part | Covers |
|---|---|
| EN 15534-1 | Test methods and characterisation for WPC materials (the foundation for the other parts) |
| EN 15534-4 | Decking profiles and tiles |
| EN 15534-5 | Cladding profiles and tiles |
| EN 15534-6 | Fencing profiles |
PART BY PRODUCT TYPE
EN 15534-4 · Decking
Decking profiles and tiles — CE route is an ETA, not a DoP drawn directly against the standard.
EN 15534-5 · Cladding
Cladding profiles and tiles — the harmonisation attempt has not succeeded, so the ETA route applies.
EN 15534-6 · Fencing
Fencing profiles — same ETA structure, with fire class declared inside the document.
The distinction is between a European Standard (a technical document published by CEN) and a harmonised standard (one listed in the EU’s Official Journal and conferring the ability to draw a DoP). EN 15534-4 and -5 are the first but not the second.
THE HARMONISATION GAP
Is EN 15534 a Harmonised Standard? The WPC Decking and Cladding Gap
This is the point almost no English-language page states, and it is the reason this page exists. EN 15534-4 (decking) and EN 15534-5 (cladding) are European Standards but are not harmonised standards under the CPR. The difference between the two is the whole subject.
PUBLISHED BY CEN
European Standard
A European Standard is a technical document published by CEN. EN 15534-4 and -5 are European Standards — they describe the product and its test methods. On their own, they do not confer the ability to draw a DoP and therefore do not, by themselves, put a CE mark on the product.
What It Is
LISTED IN THE OFFICIAL JOURNAL
Harmonised Standard
A harmonised standard is a European Standard that has been listed in the EU’s Official Journal under the CPR. Only a harmonised standard confers the ability to draw up a Declaration of Performance and affix the CE mark against it. EN 15534-4 and -5 are not on that list, which is why the WPC route runs through an ETA.
What It Does
Why This Matters
A Certificate That Says “EN 15534-4” Alone Does Not Put a CE Mark on the Product
The ETA route is not a weakness — it is the correct, recognised route for these products, and an ETA from a notified body is a stronger document than a self-declared DoP. The point is to ask for the right document. A certificate that says “EN 15534-4” and nothing else does not, on its own, put a CE mark on the product. The honest supplier volunteers this. The less careful supplier sells you the testing without mentioning that the standard is not the thing that grants the mark.
FIRE PERFORMANCE · EN 13501-1
WPC Fire Classification Under EN 13501-1
“CE marked” without a fire class tells the buyer nothing. Fire performance for WPC is classified under EN 13501-1, the reaction-to-fire standard, and the result is a class, not a yes or no. The class must be stated — and it depends on whether the product is a flooring or a wall/ceiling product.
FLOORING CLASSIFICATION
Decking Profiles: Bfl-s1
Bfl-s1 is the classification a decking profile carries. The “fl” subscript marks flooring products, and the “s1” is the smoke-production rating. This is the shape of class a buyer should expect to see named in the ETA or DoP for a decking profile.
The “fl” subscript is what identifies a
flooring product classification.
The “s1” is the smoke-production rating —
additional smoke classes exist and are
relevant to some projects.
The actual class depends on the specific
product, its formulation, and the test
report behind its ETA.
Ask for the EN 13501-1 classification stated in writing, with the test report behind it — not a “fire rated” description.
WALL & CEILING CLASSIFICATION
Cladding Profiles: B-s1,d0 / C-s1,d0
B-s1,d0 or C-s1,d0 are the classifications a wall and ceiling product carries. The “s” is smoke and the “d” is flaming droplets — a cladding profile is assessed in this shape rather than in the flooring shape.
The “d0” rating is the flaming-droplet class —
relevant wherever the product is mounted
overhead.
Which class applies depends on the product,
the mounting method, and the test behind the
ETA.
These are typical targets cited across the
industry — the declared class in your document
is what governs your project.
A cladding ETA that states no fire class leaves a gap the moment a specifier or building-control authority asks the question.
Warning
“Fire Rated” Without a Class Avoids the Question
A supplier who tells you a product is “fire rated” without naming the class and the standard is not answering your question — they are avoiding it. The US market asks the same question through a different standard: where an EU project cites EN 13501-1, a US or code-driven project is more likely to cite ASTM E84, which classifies flame spread and smoke development. The two are not interchangeable — ask which standard the project’s authority expects, and confirm the product’s class under that standard.
DOP STRUCTURE
What a Declaration of Performance (DoP) Must Contain
When a supplier says “CE marked”, the question to ask is: show me the document. For WPC decking and cladding, that is the ETA plus the DoP built on it. A DoP is a short, structured document, and it should contain these fields.
Product Name and Type
The specific profile, not a family name. This is the field that lets you check the document matches the product on your order.
Named ProfileIntended Use
Where and how the product may be used. An exterior decking profile and an interior panel will not declare the same intended use.
Scope of UseManufacturer
The legal entity taking responsibility for the declaration. This is the party the notified-body record and the NANDO check will refer back to.
Legal EntityStandard or ETA Reference
Which document the performance is declared against — the EAD the ETA was issued under. “EN 15534” on its own is not enough.
EAD ReferenceAVCP System
The Assessment and Verification of Constancy of Performance system — how ongoing conformity is checked after the initial assessment.
Ongoing ConformityThe Notified Body
The named third party, where the AVCP system requires one. A DoP that is missing the notified-body number is not a complete document.
Four-Digit NumberDeclared Performance Table
The actual values, characteristic by characteristic. If the table has no fire class, that is a gap you will feel the moment a specifier asks the question.
Characteristic by CharacteristicManufacturer’s Signature
The person accountable for the declaration. A DoP without a signature is a draft, not a declaration.
Accountable Party
INCOMPLETE DOCUMENT
A DoP Missing Its Notified Body, Standard, or Performance Table Is Not a Complete Document
If the declared performance table has no fire class, that is a gap you will feel the moment a specifier or a building-control authority asks the question. A document you have not verified against the issuing register is a piece of paper, not a compliance record.
Incomplete
→ no verifiable record
CE MARKING FAQ
Frequently Asked Questions
Common questions about CE marking, EN 15534, the ETA route, and the documents a buyer should request before importing WPC construction products.
Yes, if it is placed on the EU market as a construction product. Because EN 15534-4 is not a harmonised standard, the CE mark for WPC decking follows the ETA route rather than a DoP drawn directly against the standard.
No. EN 15534 is a European standard family, but the product parts — EN 15534-4 (decking) and EN 15534-5 (cladding) — are not harmonised under the CPR, so they do not, on their own, permit a DoP and a CE mark.
A Declaration of Performance is the manufacturer’s statement of the product’s declared characteristics, the standard or ETA it is declared against, the notified body, and the manufacturer’s signature. For WPC decking and cladding it is built on an ETA rather than on EN 15534 directly.
CE marking is the mark the manufacturer affixes. An ETA (European Technical Assessment) is the document that provides the technical basis for the mark when no harmonised standard covers the product. For WPC decking and cladding, the ETA is the route.
EN 15534-5 covers cladding profiles and tiles, and EN 13501-1 covers reaction to fire. Because EN 15534-5 is not harmonised, the CE route for WPC cladding is an ETA issued against a European Assessment Document.
The ETA plus the Declaration of Performance, stating the standard or EAD reference and the notified-body number. Ask for both, then check the notified-body number against the NANDO register.