oSIST prEN 13408:2026
(Main)Adhesives - Test method for cementitious and calciumsulfate-based floor levelling compounds - Determination of bond strength
Adhesives - Test method for cementitious and calciumsulfate-based floor levelling compounds - Determination of bond strength
This document specifies a test method for the determination of bond strength between an underlayment produced with cementitious or calciumsulfate-based floor levelling compounds and a standard substrate.
This document applies to cementitious, and calcium sulphate-based floor levelling compounds used for the preparation of subfloors to ensure the suitability of the substrate prior to the installation of floor coverings. By using the floor levelling compound, a homogeneous layer is built up on the load-bearing substrate, to ensure consistent absorbency, evenness and strength.
Klebstoffe - Prüfverfahren für zement- und calciumsulfatbasierte Bodenspachtelmassen - Bestimmung der Haftzugfestigkeit
Dieses Dokument legt ein Prüfverfahren für die Bestimmung der Zugfestigkeit des Haftverbundes zwi
schen einer Spachtelschicht aus zement- oder calciumsulfatbasierter Bodenspachtelmasse und einem Standard-Fügewerkstoff fest.
Dieses Dokument ist auf zement- und calciumsulfatbasierte Bodenspachtelmassen für die Herstellung von Unterböden anwendbar, um die Eignung des Fügewerkstoffs vor dem Verlegen von Bodenbelägen sicherzu
stellen. Mithilfe der Bodenspachtelmasse wird eine homogene Schicht auf dem krafttragenden Fügewerkstoff aufgebaut, um Absorptionsvermögen, Ebenheit und Festigkeit sicherzustellen.
Adhésifs - Méthode d’essai pour les mortiers de nivellement à base de ciment et de sulfate de calcium - Détermination de la force de liaison
Le présent document spécifie une méthode d'essai permettant de déterminer la force de liaison entre un enduit de lissage produit avec des mortiers de nivellement à base de ciment ou de sulfate de calcium et un substrat normalisé.
Le présent document s'applique aux mortiers de nivellement à base de ciment et de sulfate de calcium utilisés pour la préparation des sous-planchers afin de garantir l'adéquation du substrat avant la pose des revêtements de sol. L'utilisation du mortier de nivellement permet de créer une couche homogène sur le substrat porteur, afin de garantir une absorption, une planéité et une résistance uniformes.
Lepila - Preskusna metoda za cementne in kalcijsulfatne izravnalne mase za tla - Ugotavljanje trdnosti vezave
General Information
- Status
- Not Published
- Public Enquiry End Date
- 29-Apr-2026
- Technical Committee
- IPMA - Polimer materials and products
- Current Stage
- 4020 - Public enquire (PE) (Adopted Project)
- Start Date
- 20-Feb-2026
- Due Date
- 10-Jul-2026
Relations
- Effective Date
- 08-May-2024
Overview
oSIST prEN 13408:2026:2026 defines a standardized test method for determining the bond strength between cementitious or calciumsulfate-based floor levelling compounds and a standard substrate. Developed by CEN/TC 193, this European standard is essential for manufacturers and testing laboratories seeking uniform assurance of floor levelling compound performance, especially prior to the installation of floor coverings.
Floor levelling compounds are critical for preparing subfloors in both commercial and residential construction. By forming a homogeneous and resilient layer over load-bearing substrates, these compounds ensure consistent absorbency, surface evenness, and structural strength, which are essential before final flooring installation.
Key Topics
- Bond Strength Testing: The standard outlines a laboratory procedure for assessing the adhesive strength between the floor levelling compound and a concrete substrate. Bond strength is a key indication of performance, durability, and suitability for use under floor coverings.
- Applicable Compounds: oSIST prEN 13408:2026 covers both cementitious and calciumsulfate-based underlayments, which are among the most commonly used floor levelling compounds in modern construction.
- Standard Test Conditions: The procedure specifies temperature, humidity, and air circulation parameters based on ISO 554, ensuring test repeatability and reliability.
- Testing Apparatus: Details on necessary equipment - such as tensile testing machines, metal plates, and standardized substrate slabs - are provided to create uniform testing environments across laboratories.
- Result Evaluation: Results are expressed in terms of bond strength (MPa) and the mode of failure (cohesive in compound, cohesive in substrate, or adhesive failure), using EN ISO 10365 definitions.
Applications
oSIST prEN 13408:2026 is essential for several stakeholders in the construction and flooring industry:
- Manufacturers: Ensures that floor levelling compounds meet minimum bond strength requirements for use with a variety of floor coverings (carpet, vinyl, ceramic tiles, wood, etc.).
- Testing Laboratories: Provides a detailed and reproducible method for quality assurance and certification of new or existing levelling products.
- Flooring Installers and Contractors: Confirms product reliability and compatibility, minimizing risks of floor covering failure due to inadequate substrate preparation.
- Specifiers and Architects: Supports informed material selection by referencing products tested according to a recognized European standard.
Related Standards
For comprehensive quality control and compliance, oSIST prEN 13408:2026 references several key documents:
- EN 12004-2: Adhesives for ceramic tiles - Test methods
- prEN 1937:2026: Adhesives - Test method for cementitious and calciumsulfate-based floor levelling compounds - Standard mixing procedures
- EN ISO 10365: Designation of main failure patterns for adhesives
- ISO 554: Standard atmospheres for conditioning and/or testing
These related standards work together to provide a robust framework for testing, evaluating, and specifying adhesives and floor levelling compounds in the building sector.
Summary: Adhering to oSIST prEN 13408:2026 ensures that floor levelling compounds provide the necessary bond strength for long-lasting, safe, and high-quality floor installations. This standard enhances product reliability and enables clearer communication across all parts of the construction supply chain.
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Frequently Asked Questions
oSIST prEN 13408:2026 is a draft published by the Slovenian Institute for Standardization (SIST). Its full title is "Adhesives - Test method for cementitious and calciumsulfate-based floor levelling compounds - Determination of bond strength". This standard covers: This document specifies a test method for the determination of bond strength between an underlayment produced with cementitious or calciumsulfate-based floor levelling compounds and a standard substrate. This document applies to cementitious, and calcium sulphate-based floor levelling compounds used for the preparation of subfloors to ensure the suitability of the substrate prior to the installation of floor coverings. By using the floor levelling compound, a homogeneous layer is built up on the load-bearing substrate, to ensure consistent absorbency, evenness and strength.
This document specifies a test method for the determination of bond strength between an underlayment produced with cementitious or calciumsulfate-based floor levelling compounds and a standard substrate. This document applies to cementitious, and calcium sulphate-based floor levelling compounds used for the preparation of subfloors to ensure the suitability of the substrate prior to the installation of floor coverings. By using the floor levelling compound, a homogeneous layer is built up on the load-bearing substrate, to ensure consistent absorbency, evenness and strength.
oSIST prEN 13408:2026 is classified under the following ICS (International Classification for Standards) categories: 91.100.99 - Other construction materials. The ICS classification helps identify the subject area and facilitates finding related standards.
oSIST prEN 13408:2026 has the following relationships with other standards: It is inter standard links to SIST EN 13408:2002. Understanding these relationships helps ensure you are using the most current and applicable version of the standard.
oSIST prEN 13408:2026 is available in PDF format for immediate download after purchase. The document can be added to your cart and obtained through the secure checkout process. Digital delivery ensures instant access to the complete standard document.
Standards Content (Sample)
SLOVENSKI STANDARD
01-april-2026
Lepila - Preskusna metoda za cementne in kalcijsulfatne izravnalne mase za tla -
Ugotavljanje trdnosti vezave
Adhesives - Test method for cementitious and calciumsulfate-based floor levelling
compounds - Determination of bond strength
Klebstoffe - Prüfverfahren für zement- und calciumsulfatbasierte Bodenspachtelmassen -
Bestimmung der Haftzugfestigkeit
Adhésifs - Méthode d’essai pour les mortiers de nivellement à base de ciment et de
sulfate de calcium - Détermination de la force de liaison
Ta slovenski standard je istoveten z: prEN 13408
ICS:
91.100.99 Drugi gradbeni materiali Other construction materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
DRAFT
EUROPEAN STANDARD
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2026
ICS 91.100.99 Will supersede EN 13408:2002
English Version
Adhesives - Test method for cementitious and
calciumsulfate-based floor levelling compounds -
Determination of bond strength
Adhésifs - Méthode d'essai pour les mortiers de Klebstoffe - Prüfverfahren für zement- und
nivellement à base de ciment et de sulfate de calcium - calciumsulfatbasierte Bodenspachtelmassen -
Détermination de la force de liaison Bestimmung der Haftzugfestigkeit
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 193.
If this draft becomes a European Standard, 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.
This draft European Standard was established by CEN 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, 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.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 13408:2026 E
worldwide for CEN national Members.
Contents Page
European foreword . 3
Introduction . 4
1 Scope . 5
2 Normative references . 5
3 Terms and definitions . 5
4 Principle . 5
5 Standard test conditions . 5
6 Apparatus and material . 6
7 Procedure . 6
7.1 Preconditioning . 6
7.2 Test procedure . 6
8 Evaluation and expression of results . 7
9 Test report . 7
European foreword
This document (prEN 13408:2026) has been prepared by Technical Committee CEN/TC 193 “Adhesives”,
the secretariat of which is held by UNE.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 13408:2002.
— term “hydraulic setting floor smoothing and/or levelling compounds” changed to “cementitious and
calciumsulfate-based floor levelling compounds”;
— concretisation of the scope;
— updated normative references;
— editorial changes.
Introduction
Persons using this document are to be familiar with normal laboratory practice.
This document does not purport to address all the safety problems, if any, associated
...




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