SIST EN 13496:2025

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, appropriate for the range of force and displacement involved, capable of
having a constant crosshead speed adjusted to (100 ± 5) mm/min.
It shall be capable of measuring the force with an accuracy of at least 10 N.
5.3 Clamps of the tensile testing machine, which shall be coated with a material to ensure attachment
without slippage of the test specimen, for example rubber, and shall fasten the test specimen across its
whole width without damaging. The clamps shall be sufficiently rigid to be not deformed during the test.
5.4 Container, which shall be wide and deep enough so that the test specimens can be immersed
completely in an alkaline solution.
The material of the container shall be resistant to the alkaline solution (e.g. plastics or stainless steel).
5.5 Test specimen holder, which ensures a correct position of immersed test specimens. Its design
shall minimize the contact between the test specimens.
NOTE 1 A basket rack or a hanger are suitable tools for placement of the test specimens in the alkaline solution.
NOTE 2 The design of the holder can assist in avoiding skin and eye contact with the alkaline solution while
working with the test specimens.
6 Test specimens
6.1 Number of test specimens
For each combination of test direction and conditioning, 7 test specimens are required.
If measurements will be discarded, more than 7 test specimens are required.
6.2 Dimensions of the test specimens
The length of the test specimens shall be at least 300 mm. For the width of the test specimens, see 6.3.6.
6.3 Preparation of the test specimens
6.3.1 Sampling
If the sample is a roll, the first meter of the roll shall be discarded. In any case, the edge area of 100 mm
shall be discarded. The test pieces shall be taken randomly from the sample for representative sampling.
6.3.2 Determination of the number of threads per 50 mm
The determination of the number of threads per 50 mm shall be measured over the distance between 21
threads l from the middle of thread 1 to the middle of thread 21 according to Figure 1. The measurement
shall be made with the calliper in both directions, i.e. warp and weft.
Key
l21 measured distance from thread 1 to thread 21
d thickness of thread n (n = 1, 2, 3 … 18, 19, 20)
n
Figure 1 — Determination of l and d
21 n
The number of threads per 50 mm width N of the sample shall be calculated in accordance with
Formula (1):
N= (1)
l
where
N is the calculated number of threads in 1/50 mm, rounded down to 0,1/50 mm;
l is the measured distance from thread 1 to thread 21 in mm, rounded to 0,1 mm.
6.3.3 Determination of the mesh size and mesh opening in warp and weft direction
The mesh size l for each direction shall be calculated in accordance with Formula (2):
l
l = (2)
where
l2 is the mesh size, rounded to 0,1 mm;
l is the measured distance from thread 1 to thread 21 in mm, rounded to 0,1 mm.
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