SIST EN 13496:2025

Thermal insulation products for building applications - Determination of the mechanical properties of glass fibre meshes as reinforcement for external thermal insulation composite kits with renders (ETIC kits)

This document specifies equipment and procedures for determining the tensile strength and elongation of rectangular and triaxial glass fibre meshes which are used for the reinforcement of the base coat in external thermal insulation composite kits with renders (ETIC kits).

Wärmedämmstoffe für das Bauwesen - Bestimmung der mechanischen Eigenschaften von Glasfasergewebe als Armierung für außenseitige Wärmedämm-Verbundsysteme mit Putz (WDVS)

Dieses Dokument legt Prüfeinrichtungen und Verfahren zum Bestimmen der Zugfestigkeit und der Dehnung von rechteckigen und triaxialen Glasfasergeweben fest, die für die Armierung des Unterputzes von außenseitigen Wärmedämm-Verbundsystemen mit Putz (WDVS) verwendet werden.

Produits isolants thermiques pour le bâtiment - Détermination des caractéristiques mécaniques des treillis de fibres de verre servant à renforcer les kits de systèmes composites d’isolation thermique par l’extérieur (kits ETIC) avec des enduits

Le présent document spécifie l’équipement et les modes opératoires pour déterminer la résistance à la traction et l’allongement de treillis de fibres de verre rectangulaires et triaxiaux servant à renforcer la couche de base des kits de systèmes composites d’isolation thermique par l’extérieur (kits ETIC) avec des enduits.

Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje mehanskih lastnosti mrežice iz steklenih vlaken kot armature za kompozitne komplete zunanje toplotne izolacije z ometom (ETIC kompleti)

Ta dokument določa opremo in postopke za ugotavljanje natezne trdnosti in raztezka pravokotnih in triaksialnih mrežic iz steklenih vlaken, ki se uporabljajo za ojačanje osnovnega premaza v kompozitnih kompletih zunanje toplotne izolacije z ometom (ETIC kompleti).

General Information

• Status: Published
• Public Enquiry End Date: 16-Dec-2021
• Publication Date: 11-Jun-2025
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: TOP - Thermal insulation
• Current Stage: 6060 - National Implementation/Publication (Adopted Project)
• Start Date: 22-May-2025
• Due Date: 27-Jul-2025
• Completion Date: 12-Jun-2025
• Ref Project: EN 13496:2025 - Thermal insulation products for building applications - Determination of the mechanical properties of glass fibre meshes as reinforcement for external thermal insulation composite kits with renders (ETIC kits)

Relations

• Replaces: SIST EN 13496:2013 - Thermal insulation products for building applications - Determination of the mechanical properties of glass fibre meshes
• Effective Date: 01-Jul-2025
• Refers: SIST EN ISO 9229:2020 - Thermal insulation - Vocabulary (ISO 9229:2020)
• Effective Date: 28-Jan-2026
• Refers: SIST EN ISO 20347:2022 - Personal protective equipment - Occupational footwear (ISO 20347:2021)
• Effective Date: 28-Jan-2026
• Refers: SIST EN 12127:1999 - Textiles - Fabrics - Determination of mass per unit area using small samples
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13914-1:2016 - Design, preparation and application of external rendering and internal plastering - Part 1: External rendering
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13499:2003 - Thermal insulation products for buildings - External thermal insulation composite systems (ETICS) based on expanded polystyrene - Specification
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 13500:2003 - Thermal insulation products for buildings - External thermal insulation composite systems (ETICS) based on mineral wool - Specification
• Effective Date: 28-Jan-2026
• Referred By: SIST EN 16383:2017 - Thermal insulation products for building applications - Determination of the hygrothermal behaviour of external thermal insulation composite systems with renders (ETICS)
• Effective Date: 28-Jan-2026

Overview

SIST EN 13496:2025 specifies standardized methods for determining the mechanical properties-specifically tensile strength and elongation-of glass fibre meshes used as reinforcement in external thermal insulation composite kits with renders (ETIC kits). This European standard applies to both rectangular and triaxial glass fibre meshes, ensuring that these materials provide reliable and consistent performance in building thermal insulation applications. It includes precise equipment requirements, specimen preparation, conditioning, and test procedures, supporting improved product quality and safety in construction.

Key Topics

• Tensile Strength and Elongation Testing: Outlines the procedures for measuring the maximum force the mesh can withstand and its elongation at failure, considering both warp and weft directions (plus two weft directions for triaxial meshes).
• Types of Conditioning: Details three possible conditions for test specimens - no additional conditioning, 24-hour warm alkali conditioning, and 28-day alkali conditioning - reflecting durability needs in construction environments.
• Specimen Preparation and Sampling: Specifies how to prepare, measure, and handle test specimens for consistency and accuracy, including sampling distance from roll edges and uniformity of thread count.
• Test Apparatus Requirements: Defines the mechanical and dimensional accuracy needed for callipers, tensile testing machines, clamps, and alkaline-resistant containers.
• Comprehensive Reporting: Requires detailed test reports, including product identification, mesh characteristics (such as mass per unit area, mesh size, and mesh opening), test conditions, deviations, and a summary of all results.

Applications

SIST EN 13496:2025 is essential for the construction sector, particularly for manufacturers and installers of external thermal insulation composite kits with renders. The standard ensures:

• Product Qualification: Validates the mechanical integrity of glass fibre meshes used for ETIC kits, helping manufacturers meet European and international building codes.
• Quality Control in Production: Provides a robust framework for routine testing during manufacturing, ensuring consistent material performance across batches.
• Specification in Building Projects: Enables architects, engineers, and contractors to specify tested, reliable reinforcement meshes for facades, energy-saving retrofit systems, and other external insulation projects.
• Durability Assessment: The inclusion of alkaline conditioning simulates long-term exposure to external environments, verifying the mesh’s suitability for demanding building applications.
• Regulatory Compliance: Assists stakeholders in meeting harmonized European standards, facilitating market access within the construction industry.

Related Standards

For broader context and integration into quality management systems, consider these related standards:

• EN ISO 9229: Provides terminology for thermal insulation, ensuring consistent communication across documentation and testing.
• EN 12127:1997: Specifies protocols for determining the mass per unit area of textile fabrics, relevant to mesh characterization.
• ISO 1887: Identifies methods for determining the combustible matter content in textile glass, supporting further material analysis.
• Other ETICS-related standards: Many additional SIST and EN documents address aspects such as system performance, fire resistance, and installation methods for ETICs.

Keywords: SIST EN 13496:2025, glass fibre mesh, ETIC kits, thermal insulation products, tensile strength, elongation, mechanical testing, external insulation, standardization, construction materials, building applications, quality control, European standard, façade systems.

By following SIST EN 13496:2025, organizations can ensure reliable performance, regulatory compliance, and higher confidence in the thermal insulation materials used in modern building construction.

Standards Content (Sample)

SLOVENSKI STANDARD
01-julij-2025
Nadomešča:
SIST EN 13496:2013
Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje mehanskih
lastnosti mrežice iz steklenih vlaken kot armature za kompozitne komplete zunanje
toplotne izolacije z ometom (ETIC kompleti)
Thermal insulation products for building applications - Determination of the mechanical
properties of glass fibre meshes as reinforcement for external thermal insulation
composite kits with renders (ETIC kits)
Wärmedämmstoffe für das Bauwesen - Bestimmung der mechanischen Eigenschaften
von Glasfasergewebe als Armierung für außenseitige Wärmedämm-Verbundsysteme mit
Putz (WDVS)
Produits isolants thermiques pour le bâtiment - Détermination des caractéristiques
mécaniques des treillis de fibres de verre servant à renforcer les kits de systèmes
composites d’isolation thermique par l’extérieur (kits ETIC) avec des enduits
Ta slovenski standard je istoveten z: EN 13496:2025
ICS:
91.100.60 Materiali za toplotno in Thermal and sound insulating
zvočno izolacijo materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EN 13496
EUROPEAN STANDARD
NORME EUROPÉENNE
April 2025
EUROPÄISCHE NORM
ICS 91.100.60 Supersedes EN 13496:2013
English Version
Thermal insulation products for building applications -
Determination of the mechanical properties of glass fibre
meshes as reinforcement for external thermal insulation
composite kits with renders (ETIC kits)
Produits isolants thermiques pour le bâtiment - Wärmedämmstoffe für das Bauwesen - Bestimmung
Détermination des caractéristiques mécaniques des der mechanischen Eigenschaften von Glasfasergewebe
treillis de fibres de verre servant à renforcer les kits de als Armierung für außenseitige Wärmedämm-
systèmes composites d'isolation thermique par Verbundsysteme mit Putz (WDVS)
l'extérieur (kits ETIC) avec des enduits
This European Standard was approved by CEN on 2 March 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, 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 COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION

EUROPÄISCHES KOMITEE FÜR NORMUNG

CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2025 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 13496:2025 E
worldwide for CEN national Members.

Contents Page
European foreword . 3
1 Scope . 4
2 Normative references . 4
3 Terms and definitions . 4
4 Principle . 4
5 Apparatus . 5
6 Test specimens . 5
6.1 Number of test specimens . 5
6.2 Dimensions of the test specimens . 5
6.3 Preparation of the test specimens . 5
6.3.1 Sampling . 5
6.3.2 Determination of the number of threads per 50 mm . 5
6.3.3 Determination of the mesh size and mesh opening in warp and weft direction . 6
6.3.4 Determination of the mass per unit area . 7
6.3.5 Preparation of test specimens . 7
6.3.6 Determination of the number of threads of test specimen in test direction . 7
6.4 Conditioning of the test specimens . 7
6.4.1 Conditionings . 7
6.4.2 Alkaline solution . 8
6.4.3 Placement of test specimens in the alkaline solution . 8
6.4.4 Washing and drying procedure after conditioning in alkaline solution . 8
7 Procedure. 8
7.1 Test conditions . 8
7.2 Attachment of the test specimens in the tensile testing machine . 8
7.3 Test procedure . 9
8 Calculation and expression of results . 9
9 Accuracy of measurement . 9
10 Test report . 10

European foreword
This document (EN 13496:2025) has been prepared by Technical Committee CEN/TC 88 “Thermal
insulating materials and products”, the secretariat of which is held by DIN.
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 October 2025, and conflicting national standards shall
be withdrawn at the latest by October 2025.
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 EN 13496:2013.
— addition of triaxial meshes;
— addition of 28-day conditioning in alkaline solution;
— amended accuracy of expression of results.
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.
1 Scope
This document specifies equipment and procedures for determining the tensile strength and elongation
of rectangular and triaxial glass fibre meshes which are used for the reinforcement of the base coat in
external thermal insulation composite kits with renders (ETIC kits).
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 12127:1997, Textiles — Fabrics — Determination of mass per unit area using small samples
EN ISO 9229, Thermal insulation — Vocabulary (ISO 9229)
ISO 1887, Textile glass — Determination of combustible-matter content
3 Terms and definitions
For the purposes of this document, the terms and definitions given in EN ISO 9229 and the following
apply.
ISO and IEC maintain terminology databases for use in standardization at the following addresses:
— ISO Online browsing platform: available at https://www.iso.org/obp
— IEC Electropedia: available at https://www.electropedia.org/
3.1
tensile strength of glass fibre mesh
strength of the test specimen at failure in relation to its width
3.2
elongation of glass fibre mesh
elongation of the test specimen at failure in relation to its initial length
4 Principle
The maximum tensile strength and corresponding elongation of glass fibre meshes are determined using
a tensile testing machine. The tensile strength of the meshes shall be tested in both test directions, the
warp and the weft direction. For triaxial meshes, two weft directions are recognized and both shall be
tested. Three types of conditioning can be carried out before the test:
— A, no additional conditioning;
— B, 24 h warm alkali conditioning;
— C, 28-day alkali conditioning.
5 Apparatus
5.1 Calliper, with a minimum accuracy of 0,05 mm.
5.2 Tensile testing machine, approp
...