kSIST FprEN 16863:2023

Thermal insulation products for buildings - Factory made reflective insulation (RI) products - Specification

This European standard specifies characteristics for factory made Reflective Insulation (RI) products, which are used for the thermal insulation of buildings when they are incorporated in building elements like walls, ceilings, floors, or roofs. In addition, it is proposed to assess acoustic characteristics for some applications where relevant..
Reflective insulation products are made from low emissive film(s) associated to infrared semi-transparent material layer(s) or to air cavities, so called spacers, like waddings of synthetic or natural fibres, synthetic foam or plastic filled with air bubbles.
They are manufactured in the form of rolls or semi-rigid boards and are designed to be used in conjunction with adjacent air space(s), which leads in such case to specific setup instructions. The product could also be used without neighbouring air spaces.
Reflective (low emissivity at the appropriate wavelength) surfaces are used to reduce the heat transfer by thermal radiation. This may occur across the product itself when it includes air cavities or a material that is wholly or partially transparent to infrared radiation, or across air gap(s) that is deliberately created between the reflective surface of the product and the structure of the building element.
This standard describes product characteristics and includes procedures for testing, evaluation of conformity, marking and labelling.
This standard does not specify the required level of a given property to be achieved by a product to demonstrate fitness for purpose in a particular application. The levels required for a given application are to be found in regulations or non-conflicting standards.
This standard does not replace procedures for the determination of properties of products already covered by existing harmonised specifications.
This standards does not cover in-situ insulation products and products intended to be used for the insulation of building equipment and industrial installations.

Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte reflektierende Wärmedämmstoffe - Spezifikation

Dieses Dokument behandelt werkmäßig hergestellte reflektierende Dämm  (RI, en: reflective insulation)  produkte, die für die Verwendung als Wärme  und Schalldämmung von Gebäuden vorgesehen sind. Die Produkte werden in Form von Rollen oder Platten hergestellt. Sie bestehen aus (einer) niedrigemittierenden Folie(n) und (einer) für Infrarotstrahlung semitransparenten Werkstoffschicht(en) oder Lufthohlräumen.
Dieses Dokument beschreibt die Verfahren und Kriterien für die Bewertung der Leistungsfähigkeit von werkmäßig hergestellten reflektierenden Dämmprodukten bezüglich der wesentlichen Produkteigenschaften und schließt die Verfahren für die Bewertung und Überprüfung der Leistungsbeständigkeit ein.
Je nach ihrem Grad der Komprimierbarkeit erfordern reflektierende Dämmprodukte (eine) besondere Installationsanweisung(en).
Dieses Dokument legt nicht die erforderliche Leistungsstufe für eine vorgegebene Eigenschaft fest, die ein Produkt erreichen muss, um die Gebrauchstauglichkeit für eine bestimmte Anwendung nachzuweisen. Die für eine bestimmte Anwendung erforderlichen Leistungsstufen sind in Vorschriften oder nicht entgegen¬stehenden Normen zu finden.
Folgendes wird durch das vorliegende Dokument nicht abgedeckt:
- Produkte, die für die Verwendung zur Dämmung von Gebäudeausrüstungen und Industrieanlagen vorgesehen sind;
- Produkte, die aus Mineralwolle, Polystyrol oder Polyurethanschaumstoffen (nicht eingeschlossen) bestehen, die an einer oder beiden äußeren Oberflächen mit Aluminium  oder metallisierter Folie beschichtet sind (die bereits von einer entsprechenden harmonisierten Europäischen Produktnorm abgedeckt werden);
- Abdichtungsbahnen, die als Dampfsperrbahn oder dampfdurchlässige Unterdeck  und Unterspann¬bahnen für Dachdeckungen oder Wände verwendet werden (die bereits von einer entsprechenden harmonisierten Europäischen Produktnorm abgedeckt werden).

Produits isolants thermiques pour le bâtiment - Produits d'isolation réfléchissants manufacturés - Spécification

Le présent document couvre les produits d’isolation réfléchissants (IR) manufacturés destinés à l’isolation thermique et acoustique des bâtiments. Les produits sont fabriqués en forme de rouleaux ou de plaques. Ils sont constitués d’un ou plusieurs films à faible émissivité et d’une ou plusieurs couches de matériaux semi-transparents aux infrarouges ou de cavités d’air.
Le présent document décrit les méthodes et critères d’évaluation de la performance des produits d’isolation réfléchissants manufacturés par rapport aux caractéristiques principales du produit ; il inclut les procédures d’évaluation et de vérification de la constance des performances.
Les produits d’isolation réfléchissants nécessitent une ou plusieurs instructions d’installation spécifiques selon leur niveau de compressibilité.
Le présent document ne spécifie pas le niveau requis d’une propriété donnée devant être atteint par un produit pour en démontrer l’aptitude à l’emploi dans une application particulière. Les niveaux requis pour une application donnée sont indiqués dans les réglementations ou dans des normes non contradictoires.
Le présent document ne couvre pas :
—   les produits destinés à l’isolation des équipements de construction et des installations industrielles ;
—   les produits composés de laine minérale, de mousses de polystyrène ou de polyuréthane (liste non exhaustive) recouverts d’une feuille d’aluminium ou d’une feuille métallisée sur l’une ou sur les deux faces extérieures (qui sont déjà couverts par une Norme européenne harmonisée spécifique) ;
—   les membranes utilisées comme pare-vapeur ou sous-couche de toiture ou de mur, perméable à la vapeur d‘eau (qui sont déjà couvertes par une Norme européenne harmonisée spécifique).

Toplotnoizolacijski proizvodi za stavbe - Odsevni izolacijski proizvodi (RI) - Specifikacija

General Information

• Status: Not Published
• Public Enquiry End Date: 14-Jul-2022
• ICS: 91.100.60 - Thermal and sound insulating materials
• Technical Committee: TOP - Thermal insulation
• Current Stage: 5020 - Formal vote (FV) (Adopted Project)
• Start Date: 23-Mar-2023
• Due Date: 11-May-2023
• Directive: 305/2011 - Regulation (eu) No 305/2011 of the European Parliament and of the Council of 9 march 2011 laying down harmonised conditions for the marketing of construction products and repealing council directive 89/106/eec
• Mandate: M/103 REV - Amendment to mandate to CEN and CENELEC concerning the execution of standardisation work for harmonised standards on thermal insulation products (m/103)
• Ref Project: FprEN 16863 - Thermal insulation products for buildings - Factory made reflective insulation (RI) products - Specification

Standards Content (Sample)

SLOVENSKI STANDARD
oSIST prEN 16863:2022
01-julij-2022
Toplotnoizolacijski proizvodi za stavbe - Odsevni izolacijski proizvodi (RI) -
Specifikacija

Thermal insulation products for buildings - Factory made reflective insulation (RI)

products - Specification
Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte reflektierende
Wärmedämmstoffe - Spezifikation

Produits isolants thermiques pour le bâtiment - Produits d'isolation réfléchissants

manufacturés - Spécification
Ta slovenski standard je istoveten z: prEN 16863
ICS:
91.100.60 Materiali za toplotno in Thermal and sound insulating
zvočno izolacijo materials
oSIST prEN 16863:2022 en,fr,de

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

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oSIST prEN 16863:2022
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oSIST prEN 16863:2022
DRAFT
EUROPEAN STANDARD
prEN 16863
NORME EUROPÉENNE
EUROPÄISCHE NORM
June 2022
ICS 91.100.60
English Version
Thermal insulation products for buildings - Factory made
reflective insulation (RI) products - Specification

Produits isolants thermiques pour le bâtiment - Wärmedämmstoffe für Gebäude - Werkmäßig

Produits d'isolation réfléchissants manufacturés - hergestellte reflektierende Wärmedämmstoffe -

Spécification Spezifikation

This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee

CEN/TC 88.

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, Turkey 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

© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16863:2022 E

worldwide for CEN national Members.
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Contents Page

European foreword ............................................................................................................................................ 4

Introduction .......................................................................................................................................................... 5

3.1 Terms and definitions ......................................................................................................................... 8

3.2 Symbols, units and abbreviated terms .......................................................................................... 9

4.1 Reaction to fire..................................................................................................................................... 11

4.2 Propensity to undergo continuous smouldering combustion ............................................ 11

4.3 Water permeability ............................................................................................................................ 11

4.3.1 Short-term water absorption ......................................................................................................... 11

4.3.2 Long term water absorption ........................................................................................................... 11

4.3.3 Water penetration .............................................................................................................................. 11

4.4 Water vapour diffusion resistance ............................................................................................... 11

4.5 Micro-biological growth (for products containing vegetable or animal fibre layers)

................................................................................................................................................................... 12

4.5.1 Mould and biological resistance .................................................................................................... 12

4.6 Release of dangerous substances to the indoor environment ........................................... 12

4.7 Tensile strength parallel to faces .................................................................................................. 12

4.8 Resistance to tearing ......................................................................................................................... 12

4.9 Compressive resistance (only for load bearing application in floors) ............................ 12

4.10 Sound absorption index (only for sound insulation application) ..................................... 12

4.11 Impact noise transmission index (only for sound insulation in floor application) .... 13

4.11.1 Dynamic stiffness ................................................................................................................................ 13

4.11.2 Compressibility .................................................................................................................................... 13

4.11.3 Air flow resistivity .............................................................................................................................. 13

4.12 Direct airborne sound insulation index (only for sound insulation application) ....... 13

4.12.1 Air flow resistivity .............................................................................................................................. 13

4.12.2 Air flow permeability ........................................................................................................................ 13

4.13 Thermal resistance ............................................................................................................................ 13

4.13.1 Core thermal resistance ................................................................................................................... 13

4.13.2 Emissivity ............................................................................................................................................... 13

4.13.3 Thickness ............................................................................................................................................... 14

4.14 Length and tolerance ......................................................................................................................... 14

4.15 Width and tolerance .......................................................................................................................... 14

4.16 Squareness (only for products supplied in form of board) ................................................. 14

5.1 Test of reaction to fire ....................................................................................................................... 14

5.2 Test of continuous glowing combustion ..................................................................................... 15

5.3 Test of water permeability .............................................................................................................. 15

5.3.1 Short-term water absorption ......................................................................................................... 15

5.3.2 Long-term water absorption .......................................................................................................... 15

5.3.3 Water penetration .............................................................................................................................. 16

5.4 Water vapour transmission ............................................................................................................ 16

5.5 Test of microbiological growth ...................................................................................................... 16

5.5.1 General.................................................................................................................................................... 16

5.5.2 Mould and biological resistance .................................................................................................... 16

5.6 Release of dangerous substances to the indoor environment ........................................... 16

5.7 Tensile strength parallel to faces .................................................................................................. 16

5.8 Resistance to tearing ......................................................................................................................... 16

5.9 Compressive resistance (for loadbearing application in floors) ....................................... 16

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5.10 Sound absorption index ................................................................................................................... 17

5.11 Impact noise transmission index (only for application in floors) .................................... 17

5.11.1 Dynamic stiffness ................................................................................................................................ 17

5.11.2 Compressibility ................................................................................................................................... 17

5.11.3 Air flow resistivity .............................................................................................................................. 17

5.12 Direct airborne sound insulation index (only for acoustical application) .................... 18

5.12.1 Air flow resistivity .............................................................................................................................. 18

5.12.2 Air flow permeability ........................................................................................................................ 18

5.13 Thermal resistance ............................................................................................................................ 18

5.13.1 Core thermal resistance ................................................................................................................... 18

5.13.2 Emissivity .............................................................................................................................................. 18

5.13.3 Thickness ............................................................................................................................................... 19

5.14 Length and tolerance ......................................................................................................................... 19

5.15 Width and tolerance .......................................................................................................................... 19

5.16 Squareness (only for product manufactured in board) ........................................................ 19

5.17 Sampling ................................................................................................................................................ 20

5.17.1 General ................................................................................................................................................... 20

5.17.2 Conditioning ......................................................................................................................................... 20

5.17.3 Overview testing conditions ........................................................................................................... 20

5.17.4 Test samples, testing and expression of results ...................................................................... 20

6.1 General ................................................................................................................................................... 22

6.2 Product type determination ........................................................................................................... 22

6.3 Factory production control ............................................................................................................. 23

Annex A (normative) Reaction to fire, products and assemblies ................................................... 24

Annex B (normative) Determination of the declared value of thermal resistance of the core

and the declared value of emissivity ........................................................................................... 28

Annex C (informative) Examples for the determination of thermal resistance and emissivity

................................................................................................................................................................... 31

Annex D (informative) Determining the total thermal resistance including associated

airspace(s) ............................................................................................................................................ 33

Annex E (normative) Determination of thickness reduction level and required load of the

weighted plate to be used for thickness measurement ........................................................ 35

Annex F (informative) Installed thickness measurement ................................................................ 37

Annex G (informative) Examples of placement: test sample into the wooden assembly ...... 45

Annex H (normative) Product type determination (PTD) and Factory production control

(FPC) ........................................................................................................................................................ 49

Bibliography ....................................................................................................................................................... 53

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European foreword

This document (prEN 16863:2022) has been prepared by Technical Committee CEN/TC 88 “Thermal

insulating materials and products”, the secretariat of which is held by DIN.
This document is currently submitted to the CEN Enquiry.

This standard is one of a series of standards for thermal insulation products used in buildings but this

standard can be used in other areas where appropriate. A list of all parts in a series can be found on the

CEN website.
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Introduction

Reflective insulation products are made from low emissive film(s) and infrared semi-transparent

material layer(s) called spacers; like waddings of synthetic or natural fibres, synthetic foam or plastic

filled with air bubbles.

Reflective (low emissivity at the appropriate wavelengths) surfaces are used to reduce the heat transfer

by thermal radiation. This may occur across the product itself when it includes air cavities or a material

that is wholly or partially transparent to infrared radiation, and/or across air gap(s) that are deliberately

created between the external reflective surface(s) of the product and the structure of the building

element.

Any product that is not covered by this product standard and it is intended to take advantage of adjacent

low-emissivity air cavity(ies) may make a reference to test method EN 16012:2012+A1:2015 or its own

product standard or its product specification.
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1 Scope

This document covers factory-made reflective insulation (RI) products intended for use as thermal and

acoustic insulation of buildings. The products are manufactured in the form of rolls or boards. They are

made from low emissive film(s) and infrared semi-transparent material layer(s) or air cavities.

This document describes the methods and criteria for assessing the performance of factory-made

reflective insulation products in relation to essential product characteristics and includes the procedures

for assessment and verification of the constancy of performance.

Reflective insulation products require specific setup instruction(s) depending on their level of

compressibility.

This document does not specify the required level of a given property to be achieved by a product to

demonstrate fitness for purpose in a particular application. The levels required for a given application

are to be found in regulations or non-conflicting standards.
This document does not cover:

— products intended to be used for the insulation of building equipment and industrial installations;

— products made of mineral wool, polystyrene or polyurethane foams (not inclusive) faced with

aluminium or metalized foil on one or both external surfaces (which are already covered by a

corresponding harmonized European product standard);

— membranes used as vapour control layer (VCL) or vapour-permeable roof or wall underlay (which

are already covered by a specific harmonized European product standard).
2 Normative references

The following documents are referred to in the text in such a way that some or all 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 822:2013, Thermal insulating products for building applications - Determination of length and width

EN 823:2013, Thermal insulating products for building applications - Determination of thickness

EN 824:2013, Thermal insulating products for building applications - Determination of squareness

EN 826:2013, Thermal insulating products for building applications - Determination of compression

behaviour

EN 1928:2000, Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing

- Determination of watertightness

EN 1931:2000, Flexible sheets for waterproofing - Bitumen, plastic and rubber sheets for roof waterproofing

- Determination of water vapour transmission properties

EN 12114:2000, Thermal performance of buildings - Air permeability of building components and building

elements - Laboratory test method

EN 12310-1:1999, Flexible sheets for waterproofing - Part 1: Bitumen sheets for waterproofing -

Determination of resistance to tearing (nail shank)

EN 12311-1:1999, Flexible sheets for waterproofing – Determination of tensile properties – Bitumen sheets

for roof waterproofing
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EN 12431:2013, Thermal insulating products for building applications - Determination of thickness for

floating floor insulating products
EN 13172:2012, Thermal insulation products - Evaluation of conformity

EN 13501-1:2018, Fire classification of construction products and building elements - Part 1: Classification

using data from reaction to fire tests

EN 13823:2020, Reaction to fire tests for building products - Building products excluding floorings exposed

to the thermal attack by a single burning item

EN 13859-1:2014, Flexible sheets for waterproofing - Definitions and characteristics of underlays - Part 1:

Underlays for discontinuous roofing

EN 15101-1:2013+A1:2019, Thermal insulation products for buildings - In-situ formed loose fill cellulose

(LFCI) products - Part 1: Specification for the products before installation

EN 15715:2009, Thermal insulation products — Instructions for mounting and fixing for reaction to fire

testing — Factory made products

EN 16012:2012+A1:2015, Thermal insulation for buildings - Reflective insulation products - Determination

of the declared thermal performance

EN 16516:2017+A1:2020, Construction products: Assessment of release of dangerous substances -

Determination of emissions into indoor air

EN 16733:2016, Reaction to fire tests for building products - Determination of a building product's

propensity to undergo continuous smouldering

EN 29052-1:1992, Acoustics - Determination of dynamic stiffness - Part 1: Materials used under floating

floors in dwellings

EN ISO 354:2003, Acoustics - Measurement of sound absorption in a reverberation room (ISO 354:2003)

EN ISO 1182:2020, Reaction to fire tests for products - Non-combustibility test (ISO 1182:2020)

EN ISO 9053-1:2018, Acoustics - Determination of airflow resistance - Part 1: Static airflow method (ISO

9053-1:2018)

EN ISO 1716:2018, Reaction to fire tests for products - Determination of the gross heat of combustion

(calorific value) (ISO 1716:2018)

EN ISO 6946:2017, Building components and building elements - Thermal resistance and thermal

transmittance - Calculation methods (ISO 6946:2017, Corrected version 2021-12)
EN ISO 9229:2020, Thermal insulation - Vocabulary (ISO 9229:2020)

EN ISO 11654:1997, Acoustics - Sound absorbers for use in buildings - Rating of sound absorption (ISO

11654:1997)

EN ISO 11925-2:2020, Reaction to fire tests - Ignitability of products subjected to direct impingement of

flame - Part 2: Single-flame source test (ISO 11925-2:2020)
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EN ISO 12572:2016, Hygrothermal performance of building materials and products - Determination of

water vapour transmission properties - Cup method (ISO 12572:2016)

EN ISO 16535:2019, Thermal insulating products for building applications - Determination of long-term

water absorption by immersion (ISO 16535:2019)

EN ISO 29767:2019, Thermal insulating products for building applications - Determination of short-term

water absorption by partial immersion (ISO 29767:2019)
3 Terms, definitions, symbols, units and abbreviated terms
3.1 Terms and definitions

For the purposes of this document, the terms and definitions given in EN ISO 9229:2020 (with the

exception of 3.7.15 and 3.7.16), EN 16012:2012+A1:2015 and the following apply.

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

— IEC Electropedia: available at https://www.electropedia.org/
— ISO Online browsing platform: available at https://www.iso.org/obp
3.1.1
reflective insulation product
RI product

product made from low emissive film(s) incorporating infrared semi-transparent material layer(s)

and/or to air cavities, of which there are three types (see Figure 1 to Figure 3)

Figure 1 — Type A – Alveolar reflective insulation comprising an inner shaped foam layers

combined with aluminium coated foils creating triangular shaped cavities similar to a

honeycomb structure

Figure 2 — Type B – Bubble foil comprising external reflective film and one or more layers of

plastic filled with air bubbles, in single or several layers or separated by synthetic fibres, foam,

quilt and/or wadding
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Figure 3 — Type C – Multi-foils reflective insulation comprising internal reflective film(s)

separated by synthetic or natural fibres, foam, quilt, plastic filled with air bubbles and/or

wadding that may be faced with external reflective foil(s)
3.1.2
roll
flexible reflective insulation product, supplied rolled or flat
3.1.3
board

rigid or semi-rigid reflective insulation product of rectangular shape and cross section in which the

thickness is uniform and substantially smaller than the other dimensions
3.1.4
compressibility

measure of the relative volume change of a fluid or a solid as a response to a pressure change

3.1.5
core thermal resistance

thermal resistance of the product from face to face at the tested thickness, excluding the contribution of

any air space(s)/layer(s) adjacent to the product
3.1.6
emissivity

ratio of the energy radiated from a material’s surface to that radiated from a perfect emitter, known as a

blackbody, at the same temperature and wavelengths and under the same viewing conditions

3.2 Symbols, units and abbreviated terms

β* thickness difference (see thickness reduction level test in section 14.13.3) mm

β thickness reduction (see section 14.13.3) %
b width mm
3 n
C airflow coefficient m /(s.Pa )
d thickness mm

d thickness under a load of 2 kPa after removal of an additional load of 48 kPa mm

d compressed thickness of the product under 20 kPa mm
d thickness of the product under 250 Pa mm
d nominal thickness mm
d thickness of the product under 3 Pa mm
3Pa
d thickness of the product under 25 Pa mm
25Pa
ε emissivity of a surface –
ε one test result of emissivity of a surface -
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ε mean of a number of test results of emissivity of a surface -
mean
ε 90 % fractile with a confidence level of 90 % for emissivity –
90/90
ε declared value of emissivity –
k factor related to the number of test results –
λ Declared thermal conductivity for homogeneous products W/m∙K
l length mm
n exponent related to air permeability –
n number of test results –
R 90 % fractile with a confidence level of 90 % for the thermal resistance m⋅K/W
90/90
R core thermal resistance m⋅K/W
D(core)
R thermal resistance of the core m⋅K/W
(core)
R total thermal resistance with heat flow downward m⋅K/W
(HFD)
R total thermal resistance with horizontal heat flow m⋅K/W
(HFH)
R total thermal resistance with heat flow upwards m⋅K/W
(HFU)
R one test result of thermal resistance m⋅K/W
R mean of a number of test results for thermal resistance m⋅K/W
mean
s water vapour diffusion-equivalent air layer thickness m
s estimate of the standard deviation of the thermal resistance m⋅K/W
s estimate of the standard deviation of emissivity -
S deviation from squareness on length and width -
S deviation from squareness on thickness -
σ tensile strength perpendicular to faces kPa
σ tensile strength parallel to faces kPa
W long-term water absorption by partial immersion kg/m
W short-term water absorption kg/m
X total thickness reduction at time t mm
Z water vapour resistance m⋅h⋅Pa/mg
AF level airflow resistivity kPa⋅s/m
3 n
αp level of practical sound absorption coefficient m /(s∙Pa )
αw level of weighted sound absorption coefficient -
CP level for compressibility -
µ value for water vapour diffusion resistance factor -
s level of dynamic stiffness MN/m
T thickness tolerances
TR level for tensile strength perpendicular to faces
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4 Characteristics
4.1 Reaction to fire

The reaction to fire indicates the behaviour of the construction product in the event of fire. When tested

in accordance with the test methods given in 5.1, relevant for the claimed class, the test results shall be

expressed as a class in accordance with EN 13501-1:2018 and Annex A.

If a product(s) covered by this document has passed fire performance testing in accordance with the

appropriate EN test methods, the established assigned class shall apply to the product(s) without

carrying out further reaction to fire tests. If (a) product(s) covered by this document is/are made from

one or more of the materials belonging to the “No contribution to fire” category – having passed the

testing in accordance with the appropriate EN test methods – they need not be tested further.

4.2 Propensity to undergo continuous smouldering combustion

The continuous glowing combustion is the propensity of products to undergo continuous smouldering

continuously when exposed to an open flame. When tested in accordance with 5.2, the results are

expressed either as:
— no propensity to undergo continuous smouldering, or
— propensity to undergo continuous smouldering, or
— assessment not possible.
4.3 Water permeability
4.3.1 Short-term water absorption

Short term water absorption indicates the behaviour of products when subject to a short period of

immersion in water. When tested in accordance with 5.3.1, results are expressed in kilograms per square

meters.
4.3.2 Long term water absorption

Long term water absorption indicates the behaviour of products when subject to a long period of

immersion in water. When tested in accordance with 5.3.2, results are expressed in kilograms per square

meters.
4.3.3 Water penetration

Water penetration indicates a product’s ability to prevent or limit the passage of water through it. When

tested in accordance with 5.3.3, the result is expressed as on
...