National foreword

This Published Document is the UK implementation of CEN/TS 15985:2026. It supersedes PD CEN/TR 15985:2010, which is withdrawn.

The UK participation in its preparation was entrusted to Technical Committee B/540, Energy performance of materials components and buildings.

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.

This publication is not to be regarded as a British Standard.

Compliance with a Published Document cannot confer immunity from legal obligations.

This Published Document was published under the authority of the Standards Policy and Strategy Committee on 30 November 2026.

This Technical Specification (CEN/TS) was approved by CEN on 21 September 2026 for provisional application.

The period of validity of this CEN/TS is limited initially to three years. After two years the members of CEN will be requested to submit their comments, particularly on the question whether the CEN/TS can be converted into a European Standard.

CEN members are required to announce the existence of this CEN/TS in the same way as for an EN and to make the CEN/TS available promptly at national level in an appropriate form. It is permissible to keep conflicting national standards in force (in parallel to the CEN/TS) until the final decision about the possible conversion of the CEN/TS into an EN is reached.

CEN members are the national standards bodies of 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 United Kingdom.

European foreword

This document (CEN/TS 15985:2026) has been prepared by Technical Committee CEN/TC 88 “Thermal insulating materials and products”, the secretariat of which is held by DIN.

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 supersedes CEN/TR 15985:2010.

CEN/TS 15985:2026 includes the following significant technical changes with respect to CEN/TR 15985:2010:

CEN/TR modified to CEN/TS;
terminology modified to be in line with the CPR-2024;
update of the normative references.

According to the CEN/CENELEC Internal Regulations, the national standards organisations of the following countries are bound to announce this Technical Specification: 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

The testing frequency for EPS products with a reaction to fire performance higher than Euroclass F is given for products manufactured from raw materials with a certain chemical composition. This chemical composition is controlled during raw material production.

1 Scope

It is essential that EPS products with a reaction to fire performance better than Euroclass F be manufactured from raw materials with a chemical composition, which is under the control of the raw material producer.

This technical specification specifies the conditions allowing reduction of the FPC frequency for testing the reaction to fire of specimens made from flame retardant EPS raw material. The preconditions are that products are manufactured solely from a specified, certified raw material, within defined density limits, and produced in the way specified by the raw material supplier.

The frequency of testing the final product can be reduced and then is specified in the relevant product standards. It is essential that the reaction to fire performance of the raw material be labelled according to 8.2 in the certificate from an approved body.

The verification of the reaction to fire classification of raw materials relates only to products for which the reaction to fire Euroclass E or higher according to EN 13501‑1:2018 is being claimed. The manufacturer of the EPS boards / products continues to be responsible for the FPC of the EPS boards / products.

This technical specification is in accordance with the general rules of EN 13172:2024.

2 Normative references

3 Terms and definitions

4 Preparation of samples

5 Product type determination

6 Factory production control for EPS raw material

6.1 General

6.2 Testing frequency

7 Certification of conformity for raw material

7.1 Bodies involved in the evaluation of conformity procedure

7.2 Test specimens

7.3 Product type determination

8 Continuous surveillance of EPS raw material

8.1 Production

8.2 Factory production control

9 Material certificate for EPS raw material

10 Requirement for the raw material supply

10.1 Declaration for the raw material supply

10.2 Labelling

Bibliography