National foreword

This British Standard is the UK implementation of EN 18088:2025.

The UK participation in its preparation was entrusted to Technical Committee B/546, Flexible sheets for waterproofing and water vapour control.

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 August 2025.

This European Standard was approved by CEN on 9 June 2025.

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 18088:2025) has been prepared by Technical Committee CEN/TC 254 “Flexible sheets for waterproofing”, the secretariat of which is held by NEN.

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 February 2026, and conflicting national standards shall be withdrawn at the latest by February 2026.

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 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

This document is in accordance with the European Commission implementing decision M/584 on a standardization request to the European Committee for Standardization and the European Committee for Electrotechnical Standardization as regards plastics recycling and recycled plastics in support of the European Strategy for Plastics in a Circular Economy.

A plastic waterproofing sheet is an article as identified in article 3 of Regulation (EU) N° 1907/2006 (REACH). It contains no substances which are intended to be released from the article under normal or reasonably foreseeable conditions of use. Based on current knowledge, plastic waterproofing sheets do not contain SVHC (substances of very high concern) as listed in Annex XIV of the REACH regulation or on the candidate list published by the European Chemicals Agency in concentrations above 0,1 % (mass %).

Under the umbrella from the European Union’s Waste Framework Directive 2008/98/EC recycling of waste is one type of material recovery process intended to save resources (virgin raw material, water, and energy), while minimizing harmful emissions into air, water, and soil as well as any impacts on human health. The environmental impact of recycling should be assessed over the whole life cycle of the product.

It might be impossible to trace back each individual product including its components of the product at the end user stage and to check whether the product has been used correctly through its life. It is possible that during the lifetime contamination with other materials might occur that could affect the product’s suitability for recycling into the intended application.

1 Scope

Plastic waterproofing sheets generate plastic waste at different stages during their life cycle: production, construction process, service life and end-of-life.

This document specifies the source of recyclate made from pre-consumer material and post-consumer material as it is used in new products. These new products can be plastic waterproofing sheets, other sheets, other construction products or other products.

It defines terms and definitions.

It gives guidance for assessing the recyclates intended for use in the production of new products.

This document is applicable for similar products as construction sheets or membranes consisting of polymers or plastic components such as: swimming pool membranes, geosynthetic membranes, garden ponds membranes, protection membranes, accessories based on thermoplastic material such as walkways, prefabricated pieces. The listing is not exhaustive.

NOTE The design for recycling of packaging, including the recycling itself, is defined in the CEN/TC 261 “Packaging”.

2 Normative references

3 Terms and definitions

4 Typical application systems

5 Characterization

5.1 General

5.2 Visual characteristics

5.3 Physical characteristics

5.4 Mechanical characteristics

5.5 Thermal characteristics

5.6 Content

6 Quality assurance

7 Recycled content

8 Design for recycling

Bibliography

BS EN 18088:2025

Flexible sheets for waterproofing. Plastics recycling and recycled plastics. Plastic waterproofing sheets

Current

Published:

31 Aug 2025