National foreword

This British Standard is the UK implementation of EN 18159:2026.

The UK participation in its preparation was entrusted to Technical Committee B/542/12, Double skin metal faced sandwich panels for roofing and cladding.

A list of organizations represented on this committee can be obtained on request to its committee manager.

Contractual and legal considerations

This publication has been prepared in good faith, however no representation, warranty, assurance or undertaking (express or implied) is or will be made, and no responsibility or liability is or will be accepted by BSI in relation to the adequacy, accuracy, completeness or reasonableness of this publication. All and any such responsibility and liability is expressly disclaimed to the full extent permitted by the law.

This publication is provided as is, and is to be used at the recipient’s own risk.

The recipient is advised to consider seeking professional guidance with respect to its use of this publication.

This publication is not intended to constitute a contract. Users are responsible for its correct application.

Compliance with a British Standard cannot confer immunity from legal obligations.

This British Standard was published under the authority of the Standards Policy and Strategy Committee on 31 October 2026.

This European Standard was approved by CEN on 14 September 2026.

CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN member.

This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management Centre has the same status as the official versions.

CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czechia, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and United Kingdom.

European foreword

This document (EN 18159:2026) has been prepared by Technical Committee CEN/TC 128 “Double skin metal faced insulating sandwich panels for roofing and cladding”, the secretariat of which is held by NBN.

This European Standard shall be given the status of a national standard, either by publication of an identical text or by endorsement, at the latest by April 2027, and conflicting national standards shall be withdrawn at the latest by April 2027.

Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN shall not be held responsible for identifying any or all such patent rights.

This document is intended to be used in conjunction with EN 15804:2012+A2:2019 and EN 16783:2024.

This document has been prepared under a standardization request addressed to CEN by the European Commission. The Standing Committee of the EFTA States subsequently approves these requests for its Member States.

Any feedback and questions on this document should be directed to the users’ national standards body. A complete listing of these bodies can be found on the CEN website.

According to the CEN-CENELEC Internal Regulations, the national standards organisations of the following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United Kingdom.

Introduction

As in EN 15804:2012+A2:2019, in addition:

This document provides rules for environmental product declarations (EPD) for metal faced insulating sandwich panels for structural and non-structural purposes in building envelopes. These sandwich panels consist of a thermal insulating core, e.g. of mineral wool or polyurethane, between outer layers of metal. Both sides of the core are bonded firmly to the two outer layers.

This document complements the core product category rules for all construction products and services as established in EN 15804:2012+A2:2019.

1 Scope

This document provides product category rules (c-PCR), that are complementary to EN 15804:2012+A2:2019, for Type III environmental declarations for sandwich panels within the scope of EN 14509‑1:‑ and EN 14509‑2:‑, which are used for non-structural and structural purposes in building envelopes and for sandwich panels with perforated faces and for sandwich panels with core materials others than defined in EN 14509‑1:‑ and EN 14509‑2:‑.

Manufactured on industrial plant, double skin metal faced insulating sandwich panels are designed to be laid with overlapping edges in the following applications:

roofs and discontinuous roofing;
outer walls and wall cladding;
walls (incl. partition walls) and (suspended) ceilings inside the building envelope.

This document is intended to be used cradle-to-grave, declaring modules A1-A3, modules C1-C4 and module D, according to EN 15804:2012+A2:2019

NOTE The assessment of social and economic performances at product level is not covered by this document.

2 Normative references

3 Terms and definitions

4 Symbols, subscripts and abbreviations

5 General aspects

5.1 Objectives of the complementary PCR

5.2 Types of EPD with respect to life cycle stages covered

5.3 Comparability of EPD for construction products

5.4 Additional environmental information

5.5 Ownership, responsibility and liability for the EPD

5.6 Communication formats

6 Product category rules for LCA

6.1 Product category

6.2 Life cycle stages and their information modules to be included

6.3 Calculation rules for the LCA

6.4 Inventory analysis

6.5 Impact assessment

7 Content of the EPD

7.1 Declaration of general information

7.2 Declaration of environmental indicators derived from LCA

7.3 Scenarios and additional technical information

7.4 Additional information on release of dangerous substances to indoor air, soil and water during the use stage

7.5 Aggregation of information modules

8 Project report

8.1 General

8.2 LCA-related elements of the project report

8.3 Documentation on additional information

8.4 Data availability for verification

9 Verification and validity of an EPD

Bibliography