oSIST prEN 16491:2012

SLOVENSKI STANDARD
01-december-2012
Toplotnoizolacijski proizvodi za stavbe - Industrijsko izdelani sestavljeni izdelki -
Specifikacija
Thermal insulation products for buildings - Factory made composite products -
Specification
Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte Mehrschicht-Produkte -
Spezifikation
Produits isolants thermiques pour le bâtiment - Produits composites manufacturés -
Spécification
Ta slovenski standard je istoveten z: prEN 16491
ICS:
91.100.60 0DWHULDOL]DWRSORWQRLQ Thermal and sound insulating
]YRþQRL]RODFLMR materials
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

EUROPEAN STANDARD
DRAFT
NORME EUROPÉENNE
EUROPÄISCHE NORM
October 2012
ICS 91.100.60
English Version
Thermal insulation products for buildings - Factory made
composite products - Specification
Produits isolants thermiques pour le bâtiment - Produits Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte
composites manufacturés - Spécification Mehrschicht-Produkte - 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, Former Yugoslav Republic of Macedonia, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania,
Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Romania, 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

Management Centre: Avenue Marnix 17, B-1000 Brussels
© 2012 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 16491:2012: E
worldwide for CEN national Members.

Contents Page
Foreword .4
1 Scope .5
2 Normative references .5
3 Terms, definitions, symbols, units and abbreviated terms .7
3.1 Terms and definitions .7
3.2 Symbols, units and abbreviated terms .8
3.2.1 Symbols and units used in this standard .8
3.2.2 Abbreviated terms used in this standard . 11
4 Requirements . 12
4.1 General . 12
4.2 For all applications . 12
4.2.1 Thermal resistance . 12
4.2.2 Length and width . 13
4.2.3 Thickness . 13
4.2.4 Squareness . 13
4.2.5 Flatness . 13
4.2.6 Alignment . 13
4.2.7 Reaction to fire of the product as placed on the market . 14
4.2.8 Durability characteristics . 14
4.3 For specific applications . 14
4.3.1 General . 14
4.3.2 Offset . 14
4.3.3 Dimensional stability under specified conditions . 15
4.3.4 Deformation under specified compressive load and temperature conditions . 15
4.3.5 Tensile strength perpendicular to faces . 16
4.3.6 Compressive stress or compressive strength . 16
4.3.7 Bending strength . 16
4.3.8 Shear behaviour . 16
4.3.9 Point load . 17
4.3.10 Compressive creep . 17
4.3.11 Water absorption . 17
4.3.12 Water vapour transmission . 18
4.3.13 Freeze-thaw resistance . 18
4.3.14 Compressibility . 18
4.3.15 Dynamic stiffness . 20
4.3.16 Sound absorption . 20
4.3.17 Air flow resistivity . 20
4.3.18 Continuous glowing combustion . 20
4.3.19 Release of dangerous substances . 20
5 Test Methods . 20
5.1 Sampling . 20
5.2 Conditioning . 20
5.3 Testing . 21
5.3.1 General . 21
5.3.2 Thermal resistance . 21
6 Designation code . 23
7 Evaluation of conformity . 24
7.1 General . 24
7.2 Initial type testing . 24
7.3 Factory production control . 24
8 Marking and labelling . 25
Annex A (normative) Determination of the declared value of thermal resistance . 26
A.1 General . 26
A.2 Input data. 26
A.3 Declared value . 26
A.3.1 General . 26
A.3.2 Declaration of thermal resistance . 26
Annex B (normative) Initial type testing (ITT) and factory production control (FPC) . 28
Annex ZA (informative) Relationship between this European Standard and the Essential
Requirements of EU Directive 89/106/EEC . 32
ZA.1 Scope and relevant characteristics . 32
ZA.2 Procedures for attestation of conformity of factory made composite products . 34
ZA.2.1 Systems of attestation of conformity . 34
ZA.2.2 EC certificate and declaration of conformity . 36
ZA.3 CE Marking and labelling . 38

Tables
Table 1 — Test conditions for dimensional stability under specified temperature and humidity
conditions . 15
Table 2 — Levels for deformation under specified compressive load and temperature conditions . 16
Table 3 — Classes for thickness tolerances . 19
Table 4 — Levels for compressibility . 19
Table 5 — Test methods, test specimens and conditions . 22
Table A.1 — Values for k for one sided 90 % tolerance interval with a confidence level of 90 % . 27
Table B.1 — Minimum number of tests for ITT and minimum product testing frequencies . 28
Table B.2 — Minimum product testing frequencies for the reaction to fire characteristics . 30
Table ZA.1 — Relevant clauses for composite products and intended use . 33
Table ZA.2 — Systems of attestation of conformity . 34
Table ZA.3.1 — Assignment of evaluation of conformity tasks for products under system 1 . 35
Table ZA.3.2 — Assignment of evaluation of conformity tasks for products under system 3 or
system 3 combined with system 4 for reaction to fire . 36

Figures
Figure 1 — Measurement of deviation from alignment . 13
Figure 2 — Offset of composite layers . 15
Figure ZA.1 — Example 1 for CE marking information . 39
Figure ZA.2 — Example 2 for CE marking information . 40
Figure ZA.3 — Example 3 for CE marking information . 41
Figure ZA.4 — Example 4 for CE marking information . 42

Foreword
This document (prEN 16491:2012) 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 document has been prepared under a mandate given to CEN by the European Commission and the
European Free Trade Association, and supports essential requirements of EU Directive.
For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document.
This standard contains three Annexes:
Annex A (normative), Determination of the declared values of thermal resistance
Annex B (normative), Initial type testing (ITT) and Factory production control (FPC)
Annex ZA (informative), Clauses of this European standard addressing the provisions of the EU Construction
Products Directive
The reduction in energy used and emissions produced during the installed life of insulation products exceeds
by far the energy used and emissions made during the production and disposal processes.
1 Scope
This European standard specifies the requirements for factory made composite products to be used for
thermal insulation of buildings, such as composite insulation products with at least two different thermal
insulation layers and with or without facings or coatings, and composite products with thermal insulation
layer/s bonded to additional external layer/s of non-insulation products.
Products defined by standards EN 13162 to 13171 and prEN 16069 shall be used for the thermal insulation
layers. If a product other than those defined in above standards is used as one of the thermal insulation
layers, then its properties declared for the composite shall be assessed according to test methods and
principles in above mentioned standards.
This standard does not cover the performance of prefabricated systems incorporating these composite
products.
This standard specifies 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.
Self-supporting building products and products for structural use are not covered by this standard.
This standard does not cover in-situ composite insulation products, composite products for civil engineering
applications and composite products intended to be used for thermal insulation of building equipment and
industrial installations.
2 Normative references
The following documents, in whole or in part, are normatively referenced in this document and are
indispensable for its application. For dated references, only the edition cited applies. For undated references,
the latest edition of the referenced document (including any amendments) applies.
EN 822, Thermal insulating products for building applications — Determination of length and width
EN 823, Thermal insulating products for building applications — Determination of thickness
EN 824, Thermal insulating products for building applications — Determination of squareness
EN 825, Thermal insulating products for building applications — Determination of flatness
EN 826, Thermal insulating products for building applications — Determination of compression behaviour
EN 1602, Thermal insulating products for building applications — Determination of apparent density
EN 1603, Thermal insulating products for building applications — Determination of dimensional stability under
constant normal laboratory conditions (23 °C/50 % relative humidity)
EN 1604, Thermal insulating products for building applications — Determination of dimensional stability under
specified temperature and humidity conditions
EN 1605, Thermal insulating products for building applications — Determination of deformation under
specified compressive load and temperature conditions
EN 1606, Thermal insulating products for building applications — Determination of compressive creep
EN 1607, Thermal insulating products for building applications — Determination of tensile strength
perpendicular to faces
EN 1609, Thermal insulating products for building applications — Determination of short term water
absorption by partial immersion
EN 12086, Thermal insulating products for building applications — Determination of water vapour
transmission properties
EN 12087, Thermal insulating products for building applications — Determination of long term water
absorption by immersion
EN 12089, Thermal insulating products for building applications — Determination of bending behaviour
EN 12090, Thermal insulating products for building applications — Determination of shear behaviour
EN 12091, Thermal insulating products for building applications — Determination of freeze-thaw resistance
EN 12430, Thermal insulating products for building applications — Determination of behaviour under point
load
EN 12431, Thermal insulating products for building applications — Determination of thickness for floating floor
insulating products
EN 12667, Thermal performance of building materials and products — Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods — Products of high and medium thermal resistance
EN 12939, Thermal performance of building materials and products — Determination of thermal resistance by
means of guarded hot plate and heat flow meter methods — Thick products of high and medium thermal
resistance
EN 13162, Thermal insulation products for buildings — Factory made mineral wool (MW) products —
Specification
EN 13163, Thermal insulation products for buildings — Factory made products of expanded polystyrene
(EPS) — Specification
EN 13164, Thermal insulation products for buildings — Factory made products of extruded polystyrene foam
(XPS) — Specification
EN 13165, Thermal insulation products for buildings — Factory made rigid polyurethane foam (PUR)
products — Specification
EN 13166, Thermal insulation products for buildings — Factory made products of phenolic foam (PF) —
Specification
EN 13167, Thermal insulation products for buildings — Factory made cellular glass (CG) products —
Specification
EN 13168, Thermal insulation products for buildings — Factory made wood wool (WW) products —
Specification
EN 13169, Thermal insulation products for buildings — Factory made expanded perlite board (EPB)
products — Specification
EN 13170, Thermal insulation products for buildings — Factory made products of expanded cork (ICB) —
Specification
EN 13171, Thermal insulation products for buildings — Factory made wood fibre (WF) products —
Specification
EN 13172, Thermal insulating products — Evaluation of conformity
EN 13501-1:2007+A1:2009, Fire classification of construction products and building elements — Part 1:
Classification using data from reaction to fire test
EN 13820, Thermal insulating materials for building applications — Determination of organic content
EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to the
thermal attack by a single burning item
EN 15715, Thermal insulation products – Instructions for Mounting and Fixing for reaction to fire testing —
Factory made products
FprEN 16069, Thermal insulation products for buildings — Factory made products of polyethylene foam
(PEF) — Specification
EN 29052-1, Acoustics — Determination of dynamic stiffness — Part 1: Materials used under floating floors in
dwellings
EN ISO 354, Acoustics — Measurement of sound absorption in a reverberation room (ISO 354)
EN ISO 1182, Reaction to fire tests for building products — Non-combustibility test (ISO 1182)
EN ISO 1716, Reaction to fire tests for building products — Determination of the heat of combustion
(ISO 1716)
EN ISO 4590, Rigid cellular plastics — Determination of the volume percentage of open cells and closed cells
(ISO 4590)
EN ISO 9229, Thermal insulation — Vocabulary (ISO 9229)
EN ISO 10456, Building materials and products — Hygrothermal properties — Tabulated design values and
procedures for determining declared and design thermal values (ISO 10456)
EN ISO 11654, Acoustics — Sound absorbers for use in buildings — Rating of sound absorption (ISO 11654)
EN ISO 11925-2, Reaction to fire tests — Ignitability of building products subjected to direct impingement of
flame — Part 2: Single-flame source test (ISO 11925-2)
ISO 16269-6, Statistical interpretation of data — Part 6: Determination of statistical tolerance intervals
3 Terms, definitions, symbols, units and abbreviated terms
3.1 Terms and definitions
For the purposes of this standard, the definitions given in EN ISO 9229 apply with exception or in addition of
the following:
3.1.1
composite products
3.1.1.1
thermal insulation composite board, panel or slab
factory made product, which can be faced or coated, made from two or more layers of different thermal
insulation products. The different insulation layers can be mono- or multi-layered and are bonded together by
chemical or physical adhesion
3.1.1.2
composite board, panel or slab with thermal insulation
factory made product with a thermal insulation core, which can be mono- or multi-layered or a composite with
different insulation layers and which is covered by external layers of thickness > 3 mm (covering) on one or
both sides made from wood and other organic materials or mineral materials (e.g. glass, gypsum, mortar,
silicate). All layers are bonded together by chemical or physical adhesion
3.1.2
level
value which is the upper or lower limit of a requirement and given by the declared value of the characteristic
concerned
3.1.3
class
combination of two levels of the same property between which the performance shall fall
3.1.4
facing
functional or decorative surface material with a thickness of less or equal to 3 mm, e.g. made from paper,
plastics, wood or metal, which is not considered as separate thermal insulation layer to be added to the
thermal resistance of the product
3.1.5
coating
functional or decorative surface layers with a thickness of less than 3 mm usually applied by painting,
spraying, pouring or trowelling, which is not considered as separate thermal insulation layer to be added to the
thermal resistance of the product
3.2 Symbols, units and abbreviated terms
3.2.1 Symbols and units used in this standard
al is the alignment mm/m
is the practical sound absorption coefficient —
α
p
α is the weighted sound absorption coefficient —
w
b
is the width mm
is the deviation from the nominal width %
∆b
c is the compressibility mm
d is the thickness mm
d is the thickness under a load of 2 kPa after removal of an additional load mm
B
of 48 kPa
d is the thickness under a load of 250 Pa mm
L
d is the nominal thickness of the product mm
N
d is the thickness of the test specimen mm
S
is the relative change in width %
∆ε
b
∆ε is the relative change in thickness %
d
∆ε is the relative change in length %
l
is the compressive creep %
ε
ct
is the total thickness reduction %
ε
t
F
is the point load at a given deformation N
p
k is a factor related to the number of test results —
k is a factor related to the number of aged test results —
a
k is a factor related to the number of initial test results —
i
l is the length mm
is the deviation from the nominal length %
∆l
m is the mass of the test specimen after 2 h total immersion in water kg
m is the mass of specimen in the dry state kg
23,dry
m is the mass of specimen at 23 °C and 50 % relative humidity kg
23,50
is the water vapour diffusion resistance factor —
µ
n is the number of test results —
o Is the offset between single layers mm
is the deviation from the nominal offset mm
∆o
i
R is the 90 % fractile with a confidence level of 90 % for the thermal resistance
m ⋅K/W
90/90
R is the declared thermal resistance
m ⋅K/W
D
R is one test result of thermal resistance
m ⋅K/W
i
R is the mean thermal resistance
m ⋅K/W
mean
R is the design thermal resistance
m ⋅K/W
U
is the dynamic stiffness
s′ MN/m
S
is the deviation from squareness on length and width mm/m
b
S
is the deviation from flatness mm/m
max
s
is the estimate of the standard deviation of the thermal resistance
m ⋅K/W
R
σ is the declared bending strength kPa
b
is the bending strength at a constant span kPa
σ
bc
is the declared compressive stress kPa
σ
c
is the compressive stress at 10 % deformation kPa
σ
σ is the compressive strength kPa
m
is the tensile strength perpendicular to faces kPa
σ
mt
is the declared shear strength kPa
τ
u is the moisture content by mass at 23 °C and 50 % relative humidity kg/kg
23,50
W  is the long-term water absorption by partial immersion
kg/m
lp
W is the long-term water absorption by total immersion % vol.
lt
W is the short-term water absorption by partial immersion
kg/m
sp
W is the long-term water absorption by diffusion % vol.
dV
X
is the initial deformation after 60 s from the beginning of loading mm
X
is the compressive creep mm
ct
X
is the deformation at time t (total thickness reduction) mm
t
Z
is the water vapour resistance
m ⋅h⋅Pa/mg
AD(A) is the symbol of the declared apparent overall density
AF is the symbol of the declared level of airflow resistivity
r
AD(C) is the symbol of the declared apparent core density
AP is the symbol of the declared value of practical sound absorption coefficient
AW is the symbol of the declared value of weighted sound absorption coefficient
BS is the symbol of the declared bending strength
BS(z) is the symbol of the declared level of bending strength at a constant span
is the symbol of the declared level for compressive creep
CC(i1/i2/y)σ
c
CP is the symbol of the declared level for compressibility
CS(10\Y) is the symbol of the declared level for compressive stress or strength
DLT(i)5 is the symbol of the declared level for deformation under load and temperature at conditions
set with a maximum of 5 % deformation
DS(70,-) or is the symbol of the declared level for dimensional stability under specified temperature
DS(-20,-)
DS(23,50) or is the symbol of the declared level for dimensional stability under specified temperature and
DS(23,90) or humidity
DS(70,90)
PL(2) or PL(5) is the symbol of the declared level of point load for 2 mm or 5 mm deformation
O is the symbol of the declared value for offset tolerance
FTCD is the symbol of the declared value for the freeze-thaw resistance by diffusion
FTCI is the symbol of the declared value for the freeze-thaw resistance by immersion
SS. is the symbol of the declared value for the shear strength
T(-i /+i ) is the symbol of the declared value for thickness tolerance
1 2
TC is the symbol of the declared class for thickness tolerance of compressibility
TR is the symbol of the declared level for tensile strength perpendicular to faces
WL (T) is the symbol of the declared value for long term water absorption by total immersion
WS (P) is the symbol of the declared value for short term water absorption by partial immersion
WS(T) is the symbol of the declared value of short term water absorption by total immersion
WD(V) is the symbol of the declared value of long term water absorption by diffusion
Z is the symbol of the declared value for water vapour resistance
3.2.2 Abbreviated terms used in this standard
C/n is Composite with n for number of different layers
ITT is Initial Type Test
FPC is Factory Production Control
RtF is Reaction to Fire
4 Requirements
4.1 General
Product properties shall be assessed in accordance with clause 5. To comply with this standard, composite
products shall meet the requirements of 4.2 and the requirements of 4.3 as appropriate.
Integrity is a basic requirement of a composite product, which shall not delaminate at the bond layer. When
required, adhesion of the layers shall be checked by the tensile strength test perpendicular to the layers (see
clause 4.3.5).
One test result for a product property is the average of the measured values on the number of test specimens
given in Table 5.
NOTE Declared value of a specific single layer may be used for declaration of compressive strength/stress and water
absorption of a composite product, if this specific layer is representing the worst value for that composite product.
4.2 For all applications
4.2.1 Thermal resistance
Thermal resistance, R , of the composite product shall be declared at reference mean temperature of 10 °C
D
either by using results from direct measurement of the composite product or by calculation with addition of the
thermal resistances of each of the layers.
Thermal resistance, R , of the composite product may be measured directly only in cases where no layers are
D
included, for which ageing and/or moisture influences (e.g. layers with hygroscopic products) are relevant.
Ageing procedures shall be considered with the relevant layers in accordance with the ageing procedure
defined in the relevant product standards of these layers.
If a hygroscopic insulation layer is included in the composite, the thermal value for this layer shall be related to
a moisture content equal to that of this material when it has reached the equilibrium with the air at 23 °C and
relative humidity of 50 %.
Direct measurement of the thermal resistance of the composite product shall be carried out in accordance with
EN 12667 or EN 12939 for thick products and the declaration shall be in accordance with Annex A and shall
be based on the following:
 the measured values shall be expressed with three significant figures;
 the declared thermal resistance, R , shall be given as limit values representing at least 90 % of the
D
production, determined with a confidence level of 90 %.
For calculation of the thermal resistance, R , of the composite product the manufacturer shall take
D
 the 90/90 measured or 90/90 declared thermal resistance of the single layers,
 or the 90/90 measured or 90/90 declared thermal conductivity of the single layers together with the
nominal thickness of the layers,
 or tabulated values from EN ISO 10456:2007, Table 3 for single layers (except the insulation layers)
instead of 90/90 values.
The statistical value of R shall be rounded downwards to the nearest 0,05 m ⋅K/W and declared as R in
90/90 D
levels with steps of 0,05 m ⋅K/W.
If the bonding changes the R-value of the composite insulation product by more than 2 %, the total thermal
resistance of the product shall be determined by direct measurement only or the deviation caused by the
bonding shall be considered by adding an increment, if the calculation method with the single layers is used.
NOTE R (design value) of the composite may be determined with reference to EN ISO 10456.
U
4.2.2 Length and width
Length, l, and width, b, of the composite product shall be determined in accordance with EN 822. Each layer
of the composite product shall have the same nominal length and nominal width, if no offset of layers is
declared. The deviation from the nominal values on length, ∆l, and on width, ∆b, shall not be higher than
± 1 %.
4.2.3 Thickness
Nominal thickness, d , of the composite product is calculated by adding the nominal thickness of the single
N
layers.
Measurement of thickness, d, of the composite product shall be done in accordance with EN 823, except for
products used in floating floor application (see 4.3.12.1). The deviation of the measured value from the
nominal thickness in mm shall not be more than the declared tolerance.
4.2.4 Squareness
Squareness of the composite product shall be determined in accordance with EN 824. The deviation from
squareness on length and width, S , shall not exceed 5 mm/m.
b
4.2.5 Flatness
Flatness of the composite product shall be determined in accordance with EN 825. The deviation from
flatness, S , on both sides shall not exceed 6 mm/m.
max
4.2.6 Alignment
Alignment of the composite product shall be determined in accordance with EN 822. The deviation from
alignment, al, shall not exceed 5 mm/m.

Deviation from alignment al = max. value from al(1), al(2), al(3),… al(i)
Figure 1 — Measurement of deviation from alignment
4.2.7 Reaction to fire of the product as placed on the market
Reaction to fire classification of the composite product as placed on the market shall be determined in
accordance with EN 13501-1 and the mounting and fixing rules given in EN 15715.
Detailed information about the test conditions and the field of application of the classification as stated in the
reaction to fire classification report shall be given in the manufacturer’s literature.
4.2.8 Durability characteristics
4.2.8.1 General
The appropriate durability characteristics have been considered for the composite product and are covered in
4.2.8.2, 4.2.8.3 and where appropriate in 4.3.10 on compressive creep.
4.2.8.2 Durability of reaction to fire of the product as placed on the market against
ageing/degradation
Reaction to fire of composite products as placed on the market does not change with time. This is covered by
4.2.7 reaction to fire of the product as placed on the market.
4.2.8.3 Durability of thermal resistance against ageing/degradation
Any change in thermal conductivity of the layers of the composite product is covered and considered for
declaration by 4.2.1 together with ageing procedures, if relevant for specific layers of the composite product,
and any change in thickness is covered by at least by one of the dimensional stability tests in 4.3.3 as
relevant, or the deformation test in 4.3.4.
4.3 For specific applications
4.3.1 General
If there is no requirement for a property described in 4.3 for a composite product in use, then the property
does not need to be determined and declared by the manufacturer.
4.3.2 Offset
When offset, oi, between single layers of the composite product is declared, it shall be determined in
accordance with EN 822 (Figure 2). The deviation, ∆o, in mm from the nominal offset values shall not be
i
higher than the declared tolerance.
Key
a Length/ Width of the composite product
0 , 0 Offset
1 2
Figure 2 — Offset of composite layers
4.3.3 Dimensional stability under specified conditions
Dimensional stability under specified temperature or under specified temperature and humidity conditions
shall be determined for the composite product in accordance with EN 1603 and EN 1604. The test shall be
carried out for the conditions given in Table 1. The measured relative change in length, ∆ε, width, ∆ε and
l b
thickness, ∆ε , shall not exceed the declared level.
d
Table 1 — Test conditions for dimensional stability under specified temperature and humidity
conditions
Designation Test condition Test method
DS (23,50) 28 d, 23 ºC, 50 % R.H EN 1603
DS (23,90) 48 h, 23 ºC, 90 % R.H. EN 1604
DS (70,–) 48 h, 70 ºC EN 1604
DS (70,90) 48 h, 70 ºC, 90 % R.H. EN 1604
DS (–20,–) 48 h, –20 ºC EN 1604

The test DS (70,–), DS (23,50) and DS (23,90) need not be performed, when the test DS(70,90) is used.
4.3.4 Deformation under specified compressive load and temperature conditions
Deformation under specified compressive load and temperature conditions shall be determined for the
composite product in accordance with EN 1605. The relative change in thickness, ∆ε , shall not exceed the
d
values, given in Table 2, for the declared level.
Table 2 — Levels for deformation under specified compressive load and temperature conditions
Requirement
Level Test conditions
%
load: 20 kPa
DLT(1)5
temperature: (80 ± 1) °C
time: (48 ± 1) h
load: 40 kPa
DLT(2)5 temperature: (70 ± 1) °C ≤ 5
time: (168 ± 1) h
load: 80 kPa
DLT(3)5 temperature: (60 ± 1) °C
time: (168 ± 1) h
4.3.5 Tensile strength perpendicular to faces
Tensile strength perpendicular to faces, σ , shall be determined for the composite product in accordance with
mt
EN 1607. If relevant, additional testing provisions of single layer product standard shall be used.
No test result shall be less than the declared level, TR, chosen from the following values: 1 kPa; 2,5 kPa;
5 kPa; 7,5 kPa; 10 kPa; 15 kPa; 20 kPa; 25 kPa; 30 kPa; 40 kPa; 50 kPa; 60 kPa; 70 kPa; 80 kPa; 90 kPa;
100 kPa; 125 kPa; 150 kPa; 175 kPa; 200 kPa; 250 kPa; 300 kPa; 350 kPa, 400 kPa; 500 kPa; 600 kPa;
700 kPa; 800 kPa, 900 kPa; 1 000 kPa.
4.3.6 Compressive stress or compressive strength
Compressive stress at 10 % deformation, σ , or the compressive strength, σ , shall be determined for the
10 m
composite product in accordance with EN 826. No test result for either the compressive stress at 10 %
deformation or the compressive strength, whichever is the smaller, shall be less than the declared level,
CS(10\Y), chosen from the following values: 0,5 kPa; 5 kPa; 10 kPa; 15 kPa; 20 kPa; 25 kPa; 30 kPa; 40 kPa;
50 kPa; 60 kPa; 70 kPa; 80 kPa; 90 kPa; 100 kPa; 110 kPa; 120 kPa; 130 kPa; 140 kPa; 150 kPa; 175 kPa;
200 kPa; 225 kPa; 250 kPa; 300 kPa; 350 kPa; 400 kPa; 450 kPa; 500 kPa; 600 kPa, 700 kPa, 800 kPa,
900 kPa, 1 000 kPa, 1 200 kPa, 1 400 kPa, 1 600 kPa, 1 800 kPa, 2 000 kPa, 2 200 kPa, 2 400 kPa,
2 600 kPa, 2 800 kPa, 3 000 kPa.
4.3.7 Bending strength
Bending strength, σ , shall be determined for the composite product in accordance with EN 12089. No test
b
result shall be less than the declared level, BS, chosen from the following values: 25 kPa; 50 kPa; 75 kPa;
100 kPa; 125 kPa; 150 kPa; 175 kPa; 200 kPa; 250 kPa; 300 kPa; 350 kPa; 400 kPa; 450 kPa; 500 kPa;
600 kPa; 700 kPa; 800 kPa; 900 kPa; 1 000 kPa; 1 100 kPa; 1 200 kPa; 1 300 kPa; 1 400 kPa; 1 500 kPa;
1 700 kPa; 1 900 kPa; 2 100 kPa; 2 300 kPa; 2 500 kPa; 3 000 kPa; 3 500 kPa; 4 000 kPa.
4.3.8 Shear behaviour
Shear strength τ, and/or shear modulus, G, shall be determined for the composite product in accordance with
EN 12090. The values of shear strength, SSi, respectively shear modulus, SMi, shall be declared in levels with
steps of 10 kPa. No test result shall be less than the declared level.
4.3.9 Point load
Point load, F , at 2 mm and/or 5 mm deformation shall be determined for the composite product in accordance
p
with EN 12430 and shall be declared in load levels with steps of 50 N. No test result shall be less than the
declared level.
4.3.10 Compressive creep
Compressive creep, ε , and total thickness reduction, ε , shall be determined for the composite product after
ct t
at least one hundred twenty two days of testing at a declared compressive stress, σ , given in steps of at least
c
1 kPa, and the results extrapolated thirty times, corresponding to ten years, to obtain the declared levels in
accordance with EN 1606. Compressive creep shall be declared in levels, i , and the total thickness reduction
shall be declared in levels i , with steps of 0,5 %, at the declared stress. No test result shall exceed the
declared levels at the declared stress.
NOTE 1 Referring to the designation code CC(i /i /y)σ , according to clause 6, a declared level CC(3/2/25)40, as for
1 2 c
example, indicates a value not exceeding 2 % for compressive creep and 3 % for total thickness reduction after
extrapolation at 25 years (i.e. 30 times three hundred and four days of testing) under a declared stress of 40 kPa
NOTE 2 According to EN 1606 the procedure at 10, 25 and 50 years respectively requires the following testing times
Extrapolation time Minimum testing time
years days
10 122
25 304
50 608
4.3.11 Water absorption
4.3.11.1 General
The composite product shall be tested in that orientation, which will give the highest water absorpt
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