SIST EN 16383:2026

SLOVENSKI STANDARD
01-julij-2026
Nadomešča:
SIST EN 16383:2017
Toplotnoizolacijski proizvodi za uporabo v gradbeništvu - Ugotavljanje
higrotermičnega obnašanja zunanjih toplotnoizolacijskih kompozitnih sistemov z
ometi (sistemi ETICS)
Thermal insulation products for building applications - Determination of the hygrothermal
behaviour of external thermal insulation composite kits with a rendering system (ETICS
kits)
Wärmedämmstoffe für das Bauwesen - Bestimmung des hygrothermischen Verhaltens
von außenseitigen Wärmedämm-Verbundsystemen mit Putzen (WDVS-Bausätze)
Produits isolants thermiques destinés aux applications du bâtiment - Détermination du
comportement hygrothermique des kits composites d’isolation thermique extérieure avec
un système d’enduit (kits ETICS)
Ta slovenski standard je istoveten z: EN 16383:2026
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 16383
EUROPEAN STANDARD
NORME EUROPÉENNE
March 2026
EUROPÄISCHE NORM
ICS 91.100.60 Supersedes EN 16383:2016
English Version
Thermal insulation products for building applications -
Determination of the hygrothermal behaviour of external
thermal insulation composite kits with a rendering system
(ETICS kits)
Produits isolants thermiques destinés aux applications Wärmedämmstoffe für das Bauwesen - Bestimmung
du bâtiment - Détermination du comportement des hygrothermischen Verhaltens von außenseitigen
hygrothermique des kits composites d'isolation Wärmedämm-Verbundsystemen mit Putzen (WDVS)
thermique extérieure avec un système d'enduit (kits
ETICS)
This European Standard was approved by CEN on 19 January 2026.

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
© 2026 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 16383:2026 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 . 5
5 Test apparatus . 5
5.1 Testing device . 5
5.2 Crack measuring gauge . 6
6 Test specimen . 6
6.1 Preparation of the test specimen . 6
6.1.1 General. 6
6.1.2 Test specimen with one opening . 6
6.1.3 Test specimen with two openings . 7
6.2 Conditioning of the test specimen . 8
7 Hygrothermal cycles to which the test specimen is exposed . 8
7.1 General. 8
7.2 Heating and wetting . 9
7.3 Heating and cooling. 10
7.4 Wetting, freezing and thawing . 11
8 Assessment of the test specimen after the hygrothermal cycles . 12
9 Test report . 12

European foreword
This document (EN 16383:2026) 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 September 2026, and conflicting national standards shall
be withdrawn at the latest by September 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 supersedes EN 16383:2016.
This document includes the following significant technical changes with respect to EN 16383:2016:
— normative references have been updated;
— terms and definitions have been revised;
— crack measuring and gauge is described in more detail in 5.2 and Clause 8;
— editorial changes in Clause 6, Clause 7 and Clause 8 have been made;
— the test report, Clause 9, has been revised.
NOTE It has not been possible to include a statement on the accuracy of the test method in this edition, but it
is intended to include such a statement when this European Standard is next revised.
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 the equipment and procedures for determining the hygrothermal behaviour of
external thermal insulation composite kits with a rendering system (ETICS 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 998-1, Specification for mortar for masonry — Part 1: Rendering and plastering mortar
EN 15824, Specifications for external renders and internal plasters based on organic binders
EN ISO 9229, Thermal insulation — Vocabulary (ISO 9229)
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
substrate
part of the wall or test assembly to which an ETICS kit is fixed
3.2
adhesive
component used for bonding the thermal insulation to the substrate or used for an adhesive bed
Note 1 to entry: Adhesives are available as dry mix, ready to use or PU adhesive foam.
3.3
thermal insulation
component, thermal insulation material in its finished form, including all directly and factory-applied
facings or coatings
3.4
mechanical fixing device
component used for fixing parts of a kit to the substrate
3.5
base coat
component applied directly to the thermal insulation after fixing and/or bonding to the substrate
Note 1 to entry: Base coats are available as dry mix or ready to use.
Note 2 to entry: Base coats contain either organic or inorganic binders.
3.6
reinforcement
component, mesh, embedded in the base coat to reinforce the rendering system
3.7
reinforced base coat
base coat with embedded reinforcement
3.8
key coat
component applied to the base coat as a preparation for the application of the finishing coat
Note 1 to entry: A key coat is a very thin coating material which can be applied to the base coat as a preparation for
the application of the finishing coat. It can also be used for aesthetic reasons.
3.9
finishing coat
component, available as dry mix mortar or ready to use mortar, applied to the reinforced base coat or key
coat
Note 1 to entry: Finishing coats are available as dry mix or ready to use.
Note 2 to entry: Finishing coats contain either organic or inorganic binders.
3.10
decorative coat
component which is applied to the finishing coat
Note 1 to entry: A decorative coat is a thin coating material, mainly used for aesthetic reasons.
3.11
finishing layer
finishing coat with a key coat (optional) and/or a decorative coat (optional)
4 Principle
Expose an ETICS kit or part of an ETICS kit to a set out of hygrothermal cycles of heating, wetting, cooling
and freeze/thaw cycles.
5 Test apparatus
5.1 Testing device
The following test devices are necessary:
— device for heating the surface of the assembled kit regulated to (70 ± 5) °C and maintaining the
relative humidity of the air close to the surface of the kit to less than 30 %;
— device for wetting the surface of the kit with tap or demineralized or deionized water with a
temperature of (15 ± 5) °C and an amount of (1,5 ± 0,5) l/(m × min) with the use of spraying nozzles
to ensure uniform water distribution;
— device for cooling the surface of the kit to (−20 ± 5) °C.
These devices shall meet the required test conditions described in Clause 7.
5.2 Crack measuring gauge
The gauge shall be capable measuring from 0,05 mm and be graduated in steps of 0,05 mm. An example
is given in Figure 1.
NOTE 1 Cracks smaller than 0,05 mm cannot be sufficiently examined visually.
NOTE 2 A white gauge with black stripes is sufficient.

Key
1 scale in mm
Figure 1 — Crack measuring gauge
6 Test specimen
6.1 Preparation of the test specimen
6.1.1 General
The ETICS kit(s) shall be applied to the substrate according to the instructions of the system holder.
The thermal insulation shall be fixed to the substrate and covered by the reinforced base coat. The
perimeter edges of the test specimen shall be wrapped/covered with the reinforced base coat. The upper
2/3 of the height of the test specimen shall be covered additionally with one or more finishing layers
according to Figure 2 and Figure 3. Within the lower 1/3 from the bottom edge shall be at least one
horizontal joint between the thermal insulation boards (see “a” in Figure 2 and Figure 3). The distance
be
...