Construction Products Regulation (CPR): Which U.S. Building Materials Require CE Marking in Europe?

If you manufacture building materials in the United States and are considering exporting to the European Union, CE marking under the Construction Products Regulation (CPR) is one of the first regulatory frameworks you need to understand. It governs a wide range of construction materials and sets the conditions under which products can legally enter the EU market.

This article explains what CPR is, which U.S. building materials typically fall under its scope, and what manufacturers need to do to achieve compliance.

What Is the Construction Products Regulation (CPR)?

The Construction Products Regulation — formally Regulation (EU) 305/2011 — is the EU legislation that establishes the rules for placing construction products on the European market. Its central requirement is that manufacturers of in-scope products must declare the performance of their products against harmonized European standards, and affix CE marking before their products can be sold in the EU.

CPR is not a safety directive in the traditional sense. It does not set minimum performance thresholds that products must meet. Instead, it requires manufacturers to declare what their product can do — its structural strength, fire resistance, thermal insulation value, and so on — and to back that declaration with standardized testing. Buyers and specifiers in the EU market then use these declarations to determine whether a product is appropriate for their intended application.

For U.S. manufacturers, this distinction matters. Compliance with U.S. standards such as ASTM, UL, or ICC does not satisfy CPR requirements. European buyers, architects, and building authorities require CE marking and a Declaration of Performance — not U.S. test reports, regardless of their technical quality.

What Qualifies as a “Construction Product” Under CPR?

CPR defines a construction product as any product or kit manufactured and placed on the market for permanent incorporation into construction works — buildings, bridges, roads, infrastructure — or parts thereof.

The definition is deliberately broad. If a product is designed to be installed in or on a structure and affect its performance, it likely falls within CPR scope. This includes structural components, surface finishes, sealants, insulation, glazing, membranes, pipes, and much more.

The critical factor is “permanent incorporation.“

Products that are temporary, removable, or not intended to become part of the structure itself generally fall outside CPR scope.

However, manufacturers should not assume exclusion without verifying — the European Commission maintains official guidance on product scope that should be consulted for borderline cases.

Which U.S. Building Materials Typically Fall Under CPR?

The following categories cover the most common construction product types that U.S. manufacturers encounter when entering the EU market.

Insulation Materials

Thermal and acoustic insulation products — including mineral wool, rigid foam boards (XPS, EPS, PIR), and reflective insulation — fall squarely within CPR scope when intended for permanent installation in buildings or structures.

Key performance characteristics declared under CPR include thermal resistance (R-value expressed as λ or R in European units), fire performance (Euroclass system, A1 to F), compressive strength, and dimensional stability.

Applicable harmonized standards include EN 13162 (mineral wool), EN 13163 (EPS), EN 13164 (XPS), and EN 13165 (PUR/PIR), among others. U.S. manufacturers should note that the Euroclass fire classification system differs substantially from ASTM E84 flame spread classifications — equivalent U.S. fire test results cannot be transposed directly.

Sealants and Construction Chemicals

Sealants, adhesives, grouts, cementitious products, and construction chemicals intended for permanent use in structures fall under CPR when harmonized standards exist for them.

Applicable standards depend on the application: EN 15651 covers sealants for façade and glazing applications; EN 13813 covers screed materials; EN 998-1 and EN 998-2 cover rendering and masonry mortars respectively.

For this category, manufacturers should verify whether a harmonized standard exists for their specific product and application. Not all construction chemicals are covered by harmonized standards — where none exists, CPR does not apply and CE marking cannot be affixed.

Fire Protection Materials

Passive fire protection products — intumescent coatings, fire-stopping materials, fire-resistant boards, and structural fire protection systems — are among the most technically demanding CPR categories.

CE marking requires declaring fire resistance performance according to EN 13501 (the European fire classification standard) and the applicable product standard (e.g., EN 13381 for structural fire protection, EN 1366 for service installations). Testing must be conducted by accredited laboratories using European test methods, which differ from UL 1709 and ASTM E119 used in the U.S.

This is a category where equivalence between U.S. and European test results is frequently overestimated. U.S. fire test reports will not satisfy European notified body requirements.

Windows and Doors

Windows, external doors, and curtain walling systems are covered by CPR when intended for permanent installation in buildings. The applicable harmonized standards are EN 14351-1 (windows and external pedestrian doorsets) and EN 13830 (curtain walling).

Declared performance characteristics include thermal transmittance (Uw value), air permeability, water tightness, wind load resistance, and — depending on the product — fire resistance, acoustic performance, and burglar resistance.

For U.S. manufacturers, the transition from NFRC energy performance ratings to European thermal performance declarations requires recalculation and retesting under European methodologies. The underlying physics are the same, but the boundary conditions and calculation methods differ.

Structural Metal Components

Structural steel and aluminium components intended for permanent incorporation into load-bearing structures fall under CPR. The primary harmonized standard is EN 1090, which covers the execution of steel and aluminium structures and establishes requirements for factory production control and welding quality.

EN 1090 compliance is particularly demanding because it requires manufacturers to implement a certified Factory Production Control (FPC) system, audited by a notified body. This is not a product test — it is a process certification, closer in nature to ISO 9001 than to a standard product conformity assessment.

U.S. structural steel producers accustomed to AISC certification should be aware that EN 1090 and AISC certification are separate systems with different scope and requirements.

Membranes and Roofing Systems

Flexible sheets and membranes used in roofing, waterproofing, and below-ground applications are covered by CPR under a family of harmonized standards including EN 13707 (bitumen sheets for roof waterproofing), EN 13956 (plastic and rubber sheets), and EN 13967 (damp-proof membranes).

Declared characteristics include waterproofing performance, fire classification, tensile strength, resistance to UV exposure, and low-temperature flexibility. European climatic conditions and building traditions differ from those in the U.S., and product formulations optimized for U.S. markets may require reformulation or additional testing for EU markets.

Interior Panels and Board Products

Gypsum boards, wood-based panels, and composite interior panels intended for permanent installation in walls, ceilings, and floors fall under CPR.

Applicable standards include EN 520 (gypsum wallboards), EN 13986 (wood-based panels), and EN 14190 (reprocessed gypsum board products). Fire performance, formaldehyde emission class, and — for structural applications — mechanical performance are among the key declared characteristics.

U.S. manufacturers of gypsum wallboard should note that European gypsum board standards specify different product types and performance thresholds than ASTM C1396, and compliance with one does not imply compliance with the other.

Construction Glass

Flat glass products for use in buildings — including float glass, laminated glass, tempered glass, and coated glass — are covered by CPR under EN 572 (basic soda-lime silicate glass) and EN 14449 (laminated glass), among others.

CE marking for glass requires declaring characteristics relevant to the intended application: mechanical strength, thermal performance, light transmittance, and — where applicable — fire resistance and bullet resistance. European glass performance standards and the associated calculation methods (EN 13474 for glass in buildings) differ from those used in U.S. practice.

Pipes and Plastic Systems

Plastic piping systems intended for permanent installation in buildings and civil engineering works — including drainage, water supply, gas distribution, and underfloor heating — fall under CPR when harmonized standards apply.

Standards include EN 1401 (PVC-U for underground drainage), EN ISO 15875 (cross-linked polyethylene for hot and cold water), and EN 13244 (PE pressure pipes for general purposes), among many others. Dimensional standards, pressure ratings, and material specifications differ from ASTM and ASME equivalents.

When Is CE Marking Mandatory Under CPR?

CE marking under CPR is mandatory when all three of the following conditions are met:

1. The product falls within the scope of a harmonized standard (hEN) published in the Official Journal of the European Union
2. The harmonized standard’s coexistence period has ended (during the coexistence period, both CE marking and non-CE marking are permitted)
3. The product is intended for permanent incorporation into construction works within the EU/EEA

When no harmonized standard exists for a product, CE marking under CPR is not possible — and is not required. In these cases, manufacturers may need to pursue a European Technical Assessment (ETA) if they wish to CE mark an innovative or non-standard product.

Key Concepts Every U.S. Manufacturer Must Understand

Harmonized Standards (hEN)

Harmonized European standards are the technical backbone of CPR. They define the test methods, performance characteristics, and declaration formats for each product category. When a manufacturer tests their product against a harmonized standard and declares its performance, they create the legal basis for CE marking.

The list of harmonized standards under CPR — including their scope, applicability dates, and coexistence period end dates — is published by the European Commission. This list should be the first reference point for any manufacturer assessing whether their product requires CE marking.

Declaration of Performance (DoP)

The Declaration of Performance is the document by which a manufacturer formally declares the performance of their product for each characteristic covered by the applicable harmonized standard. It is not a test report — it is a legal declaration that references test results and states the declared values.

The DoP must be made available to customers and market surveillance authorities. Since 2019, it can be provided digitally rather than as a paper document. It must be updated whenever the product changes in a way that affects declared performance.

AVCP Systems

The Assessment and Verification of Constancy of Performance (AVCP) system determines the level of third-party involvement required in the conformity assessment. There are five systems (1+, 1, 2+, 3, 4), ranging from extensive notified body involvement to manufacturer self-declaration.

The applicable AVCP system for each product category is defined in the harmonized standard or in a Commission delegated act. U.S. manufacturers cannot choose their AVCP system — it is prescribed.

• System 4: Manufacturer self-declares based on their own testing. No notified body involvement required.
• System 3: A notified body conducts initial type testing, but the manufacturer manages Factory Production Control.
• System 2+: A notified body certifies the Factory Production Control system; the manufacturer conducts type testing.
• System 1/1+: A notified body conducts initial type testing and certifies the FPC. System 1+ additionally requires ongoing surveillance.

High-risk products — structural components, fire protection materials, certain membranes — typically fall under Systems 1+ or 1. Lower-risk products such as interior panels may fall under System 3 or 4.

Testing and Notified Bodies

Testing for CPR purposes must be conducted using European test methods specified in the applicable harmonized standard. U.S. accredited laboratories are generally not accepted for CPR testing unless they hold specific accreditation for European standards — which is uncommon.

Notified bodies are organisations designated by EU member states to carry out third-party assessment tasks under CPR. The official list of notified bodies (NANDO database) is maintained by the European Commission and searchable by product category and standard.

Common Mistakes Made by U.S. Exporters

Assuming U.S. test reports are transferable. ASTM, UL, and ICC test reports demonstrate compliance with U.S. standards, not European ones. In most cases, retesting under European methods is required.

Treating CE marking as a single process. Each product category has its own harmonized standard, AVCP system, and set of declared characteristics. There is no universal CE marking process.

Overlooking the Declaration of Performance. Some manufacturers focus on testing and overlook that the DoP is a separate legal document with specific content requirements that must be prepared and maintained independently.

Ignoring Factory Production Control requirements. CPR requires manufacturers to implement and document an FPC system — an ongoing quality management process, not a one-time certification. For higher AVCP systems, this must be audited by a notified body.

Not verifying whether a harmonized standard applies. Not every building material has a harmonized standard. Manufacturers sometimes invest in testing before confirming that CPR applies to their product at all.

Underestimating translation requirements. The Declaration of Performance must be available in the official language(s) of each EU member state where the product is sold.

Practical Checklist: Does Your Product Require CPR Compliance?

Use this checklist to assess whether your construction material falls under CPR:

• Is the product designed for permanent incorporation into a building or civil engineering work?
• Is the product within the EU/EEA market or intended to be?
• Does a harmonized standard (hEN) exist for this product category? (Check the European Commission’s list of harmonized standards)
• Has the coexistence period for that harmonized standard ended?
• Is the product not explicitly excluded from CPR scope (e.g., prefabricated structures covered by other legislation)?

If all answers are yes, CPR compliance and CE marking are mandatory. If no harmonized standard exists, CE marking is not available under CPR — consider whether a European Technical Assessment (ETA) may be appropriate.

A New Regulation Is Coming: CPR 2024/3110

U.S. manufacturers planning for medium- and long-term EU market presence should be aware that the current CPR (Regulation 305/2011) is being replaced. The new Construction Products Regulation (EU) 2024/3110 entered into force in January 2026 and introduces significant structural changes: mandatory Digital Product Passports, stricter environmental disclosure requirements, new sustainability criteria alongside traditional performance declarations, and a revised framework for market surveillance.

The transition period for the new regulation is phased, and many existing harmonized standards will continue to apply during the changeover. However, manufacturers investing in EU market access today should design their compliance infrastructure with the new framework in mind. Full details on what changes under the new CPR are available on the New Construction Products Regulation page.

How GetReady Compliance Can Help

Navigating CPR compliance from outside the EU — without prior experience of European product regulation — is a process that benefits significantly from expert guidance. GetReady Compliance works with manufacturers across construction product categories to scope applicable requirements, manage testing and notified body engagement, prepare Declarations of Performance, and implement Factory Production Control systems.

What sets our team apart in this sector is direct involvement in the European standardisation process: our experts participate in the European Commission’s working groups responsible for defining and updating the harmonized standards that underpin CPR compliance. This means we work with the rules as they are being written — not just as they are published.

If you are assessing whether your construction materials require CE marking for the EU market, or planning a full CPR compliance project, request a quote and we will give you a clear, product-specific answer.