EN 16069:2012

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Toplotnoizolacijski proizvodi za stavbe - Proizvodi iz polietilenske pene (PEF) - SpecifikacijaWärmedämmstoffe für Gebäude - Werkmäßig hergestellte Produkte aus Polyethylenschaum (PE) - SpezifikationProduits isolants thermiques pour le bâtiment - Produits manufacturés en mousse de polyéthylène (PE) - SpécificationThermal insulation products for buildings - Factory made products of polyethylene foam (PEF) - Specification91.100.60Thermal and sound insulating materialsICS:Ta slovenski standard je istoveten z:EN 16069:2012SIST EN 16069:2013en,fr,de01-marec-2013SIST EN 16069:2013SLOVENSKI
STANDARD
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16069
November 2012 ICS 91.100.60 English Version
Thermal insulation products for buildings - Factory made products of polyethylene foam (PEF) - Specification
Produits isolants thermiques pour le bâtiment - Produits manufacturés en mousse de polyethylene (PE) - Spécification
Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte Produkte aus Polyethylenschaum (PEF) - Spezifikation This European Standard was approved by CEN on 6 October 2012.
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, 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.
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B-1000 Brussels © 2012 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16069:2012: ESIST EN 16069:2013

Determination of the declared values of thermal resistance and thermal conductivity . 24SIST EN 16069:2013

A.1 General . 24A.2 Input data. 24A.3 Declared values . 24A.3.1 General . 24A.3.2 Case where thermal resistance and thermal conductivity are declared . 24Case where only thermal resistance is declared . 25Annex B (normative)
Initial type testing (ITT) and factory production control (FPC) . 26Annex C (normative)
PEF multilayered insulation products . 30C.1 General . 30C.2 Requirements . 30C.2.1 For all applications . 30C.2.2 For specific applications . 31C.3 Test methods . 31C.4 Evaluation of conformity . 31Annex D (informative)
Examples for the determination of the declared values of thermal resistance and thermal conductivity for a product or a product group . 32D.1 Case where both thermal resistance and thermal conductivity are declared . 32D.2 Case where only thermal resistance is declared . 33Annex E (informative)
Additional properties . 35E.1 General . 35E.2 Deformation under specific compressive load and temperature conditions . 35E.3 Compression modulus of elasticity . 35E.4 Bending strength . 35E.5 Apparent density . 35E.6 Compressive stress at defined deformation . 36E.7 Air flow resistivity . 36E.8 Cyclic load behaviour . 36E.9 Shear behaviour . 36E.10 Peel strength . 36Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive . 38ZA.1 Scope and relevant characteristics . 38ZA.2 Procedures for attestation of conformity of factory made PolyEthylene Foam products . 40ZA.2.1 Systems of attestation of conformity . 40ZA.2.2 EC certificate and declaration of conformity . 42ZA.3 CE Marking and labelling . 44Bibliography . 46 Tables
Table 1 — Level and classes for dimensional tolerances . 12Table 2 — Dimensional stability under specified temperature and humidity conditions . 14Table 3 — Classes for thickness tolerances . 16Table 4 — Levels for compressibility . 17Table 5 — Levels for dimensions of preformed products . 18Table 6 — Test methods, test specimens and conditions . 20Table A.1 — Values for k for one sided 90 % tolerance interval with a confidence level of 90 % . 25SIST EN 16069:2013

Foreword This document (EN 16069:2012) 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 May 2013, and conflicting national standards shall be withdrawn at the latest by May 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. 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(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This document is one of a series of standards for thermal insulation products used in buildings, but this standard may be used in other areas where appropriate. 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. 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, 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 the United Kingdom. SIST EN 16069:2013

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. Products with a declared thermal resistance lower than 0,5 m2K/W or a declared thermal conductivity greater than 0,050 W/(m⋅K) at 10 °C are not covered by this European Standard. This standard does not cover in situ insulation products and products intended to be used for the insulation of building equipment and industrial installations (covered by EN 14313). Further excluded are non-foamed materials such as bubble films, foils etc. 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 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 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 12086:1997, 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 SIST EN 16069:2013

EN 12430, Thermal insulating products for building applications — Determination of the behaviour under point load EN 12431, Thermal insulating products for building applications — Determination of thickness for floating floor insulation 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 13172:2012, Thermal insulation products — Evaluation of conformity EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests EN 13823, Reaction to fire tests for building products — Building products excluding floorings exposed to the thermal attack by a single burning item EN 15715:2009, Thermal insulation products — Instructions for mounting and fixing for reaction to fire testing — Factory made products EN 29052-1, Acoustics — Determination of dynamic stiffness — Part 1: Materials used under floating floors in dwellings (ISO 9052-1) 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 products — Determination of the gross heat of combustion (calorific value) (ISO 1716) EN ISO 1798, Flexible cellular polymeric materials — Determination of tensile strength and elongation at break (ISO 1798:2008) EN ISO 9229:2007, Thermal insulation — Vocabulary (ISO 9229:2007) 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 products subjected to direct impingement of flame — Part 2: Single-flame source test (ISO 11925-2) ISO 16269-6:2005, 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 document, the terms and definitions given in EN ISO 9229:2007 and the following apply. 3.1.1
polyethylene foam
semi-rigid or flexible cellular plastics insulation material based on polymers derived mainly from ethylene and/or propylene SIST EN 16069:2013

level given 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
roll (insulation) product supplied in the form of a spirally wound cylinder 3.1.5
board, slab rigid or semi-rigid (insulation) product of rectangular shape and cross section in which the thickness is uniform and substantially smaller than the other dimensions Note 1 to entry
A board is usually thinner than a slab. They may also be supplied in tapered form.
3.1.6
facing functional or decorative surface layer with a thickness of less than 3 mm, e.g. paper, plastic film, fabric or metal foil, which is not considered as separate thermal insulation layer to be added to the thermal resistance of the product 3.1.7
coating functional or decorative surface layer 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 3.1.8
composite insulation product
product which can be faced or coated made from two or more layers bonded together by chemical or physical adhesion consisting of at least one factory made thermal insulation material layer 3.1.9
multi-layered insulation product product which can be faced or coated made from two or more layers of a thermal insulation material from the same European Standard, which are bonded together horizontally by chemical or physical adhesion 3.2 Symbols, units and abbreviated terms 3.2.1 Symbols and units used in this European Standard αp is the practical airborne sound absorption coefficient - αw is the weighted airborne sound absorption coefficient - b is the width mm c is the compressibility
mm d is the thickness mm dB is the thickness under load of 2 kPa after removal of an additional load of 48 kPa mm dL is the thickness under load of 250 Pa mm dN is the nominal thickness of a product m ∆εb is the relative change in width
% SIST EN 16069:2013
∆εd is the relative change in thickness
% ∆εl is the relative change in length
% ∆εs is the relative change flatness
mm/m Fp is the point load at a given deformation N k is a factor related to the number of test results - l is the length mm λ is the thermal conductivity W/(m⋅K) λ90/90 is a 90 % fractile with a confidence level of 90 % for the thermal conductivity W/(m⋅K) λD is the declared of thermal conductivity W/(m⋅K) λi is one test result of thermal conductivity W/(m⋅K) λU is the design thermal conductivity W/(m⋅K) λmean is the mean value of the measured thermal conductivity W/(m⋅K) µ is the water vapour diffusion resistance factor - n is the number of test results - ρa is the apparent density kg/m3 R90/90 is a 90 % fractile with the confidence level of 90 % for the thermal resistance m2⋅K/W RD is the declared thermal resistance m2⋅K/W Ri is one test result of thermal resistance m2⋅K/W Rmean is the mean value of the measured thermal resistance m2⋅K/W RU is the design thermal resistance m2⋅K/W Sb is the deviation from squareness of the edge on length and width mm/m Smax is the deviation from flatness mm sR is the estimate of the standard deviation of the thermal resistance m2⋅K/W sλ is the estimate of the standard deviation of the thermal conductivity W/(m⋅K) s′ is the dynamic stiffness MN/m3 σ% is the compressive stress at defined % of deformation kPa σb is the bending strength kPa σc is the compressive stress kPa σmt is the tensile strength perpendicular to faces kPa TEL is the tensile elongation in length % TEw is the tensile elongation in width % TSl is the tensile strength in length kPa TSw is the tensile strength in width kPa τ is the shear strength kPa Wlp is the long term water absorption by partial immersion kg/m2 Wlt is the long term water absorption by total immersion vol.-% Wp is the short term water absorption by partial immersion kg/m2 Xct is the compressive creep mm or % Z is the water vapour resistance m2⋅h⋅Pa/mg SIST EN 16069:2013

AP is the symbol of the declared level of practical sound absorption coefficient AW is the symbol of the declared level of weighted sound absorption coefficient BS is the symbol of the declared level for bending strength CC(i1/i2/y)σc is the symbol of the declared level for compressive creep CP is the symbol of the declared level for compressibility CS(10\Y) is the symbol of the declared level for compressive stress at defined % of deformation DS(N) is the symbol of the declared level for dimensional stability under normal laboratory conditions DS(23,90) is the symbol of the declared value for dimensional stability under specified temperature and relative humidity conditions
DS (70,-)
is the symbol of the declared value for dimensional stability under specified temperature and relative humidity conditions
L is the symbol of the declared class for length tolerances MU is the symbol of the declared value for water vapour diffusion resistance factor P is the symbol of the declared class for flatness tolerance PL is the symbol of the declared level of point load at defined deformation S is the symbol of the declared class for squareness tolerance SD is the declared level for dynamic stiffness T is the symbol of the declared class for thickness tolerance W is the symbol of the declared class for width tolerance WL(P) is the symbol of the declared level for water absorption by partial immersion WL(T) is the symbol of the declared level for water absorption by total immersion Z is the symbol of the declared value for water vapour resistance 3.2.2 Abbreviated terms used in this European Standard: PEF is PolyEthylene Foam ITT is Inital Type Test FPC is Factory Production Control RtF
is Reaction to Fire SIST EN 16069:2013

4 Requirements 4.1 General Product properties shall be assessed in accordance with Clause 5. To comply with this standard, products shall meet the requirements of 4.2, and the requirements of 4.3 as appropriate. For multi-layered products additional requirements are given in Annex C. One test result for a product property is the average of the measured values on the number of test specimens given in Table 6. NOTE Information on additional properties is given in Annex E. 4.2 For all applications 4.2.1 Thermal resistance and thermal conductivity Thermal resistance and thermal conductivity shall be based upon measurements carried out in accordance with EN 12667 or EN 12939 for thick products. The thermal resistance and thermal conductivity shall be determined in accordance with Annex A and declared by the manufacturer according to the following:  the reference mean temperature shall be 10 °C;  the measured values shall be expressed with three significant figures;  for products of uniform thickness, the declared thermal resistance, RD, shall always be declared. The thermal conductivity, λD, shall be declared where possible. Where appropriate, for products of non-uniform thickness (i.e. for sloped and tapered products) only the thermal conductivity, λD, shall be declared;  the declared thermal resistance, RD, and the declared thermal conductivity, λD, shall be given as limit values representing at least 90 % of the production, determined with a confidence level of 90 %;  the statistical value of thermal conductivity, λ90/90, shall be rounded upwards to the nearest 0,001 W/(m⋅K) and declared as λD in levels with steps of 0,001 W/(m⋅K);  the declared thermal resistance, RD, shall be calculated from the nominal thickness, dN, or dL in case of products with declared compressibility (see 4.3.10.3) and the corresponding thermal conductivity, λ90/90, unless measured directly;  the statistical value of thermal resistance, R90/90, when calculated from the nominal thickness, dN, or dL in case of products with declared compressibility (see 4.3.10.3), and the corresponding thermal conductivity, λ90/90, shall be rounded downwards to the nearest 0,05 m2⋅K/W, and declared as RD in levels with steps of 0,05 m2⋅K/W;  the statistical value of thermal resistance, R90/90, for those products for which only the thermal resistance is measured directly, shall be rounded downwards to the nearest 0,05 m2⋅K/W and declared as RD in levels with steps of 0,05 m2⋅K/W.
Examples of determination of the declared values of thermal resistance, RD, and thermal conductivity, λD, are given in Annex D. SIST EN 16069:2013

T3 ± 1 mm ± 1 mm T4 –0 mm/+1 mm –0 mm/+1 mm Flatness P1 ± 30 mm/m Not applicable P2 ± 15 mm/m P3 ± 10 mm/m P4 ± 5 mm/m a Whichever gives the largest numerical tolerance.
The test shall not be performed when the tests described in 4.3.10 are used. 4.2.4 Squareness Squareness shall be determined where applicable in accordance with EN 824. The deviation from squareness on length and width, Sb, shall not exceed 5 mm/m. SIST EN 16069:2013

4.2.5 Flatness Flatness shall be determined where applicable in accordance with EN 825. The deviation from flatness, Smax, shall not exceed the tolerances in Table 1. 4.2.6 Reaction to fire of the product as placed on the market Reaction to fire classification of the 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.
NOTE
This classification is compulsory and always included in the CE Marking label.
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.
4.2.7 Durability characteristics 4.2.7.1 General The appropriate durability characteristics have been considered and are covered in 4.2.7.2, 4.2.7.3 and where appropiate in 4.3.6 on compressive creep. 4.2.7.2 Durability of reaction to fire of the product as placed on the market against ageing/ degradation The reaction to fire performance of PEF products as delcared by 4.2.6 does not change with time.
4.2.7.3 Durability of thermal resistance and thermal conductivity performance Any change of the thermal conductivity and thickness of PEF products with time is covered and considered for declaration by 4.2.1 together with Annex C for thermal conductivity and any change in thickness is covered by at least one of the 4.3.2 dimensional stability tests as relevant. 4.3 For specific applications 4.3.1 General If there is no requirement for a property described in 4.3 for a product in use, then the property does not need to be determined and declared by the manufacturer. 4.3.2 Dimensional stability
Dimensional stability under specified temperature or under specified temperature and humidity conditions shall be determined in accordance with EN 1603, in case of standard laboratory conditions, or EN 1604. The test shall be carried out for the conditions given in Table 2. The relative changes in length, ∆εl, and width, ∆εb and the relative reduction in thickness, ∆εd, shall not exceed the values given in Table 2 for the declared level. SIST EN 16069:2013

Length ∆εl Width ∆εb Thickness ∆εd DS(N) 23 ºC, 50 % R.H. EN 1603 1 ± 2 % or ± 1 mma ± 1 % or ± 1 mma ± 3 % or ± 1 mma 2 ± 2 % or ± 1 mma ± 2 % or ± 1 mma ± 4 % or ± 2 mma 3 ± 5 % or ± 1 mma
± 5 % or ± 1 mma
± 10 % or ± 5 mma
DS(70,-)
48 h, 70 ºC EN 1604 1 1,5 mm for product size < 15 mm 10 % for product size ≥ 15 mm
2 3,0 mm for product size < 15 mm 20 % for product size ≥ 15 mm
DS (23,90)
48 h, 23 ºC, 90 % R.H. EN 1604 1 ± 2 % ± 1 % ± 10 % for d < 5 mm ± 5 % for d 5…20 mm ± 2 % for ∆εd > 20 mm 2 ± 2,5 % ± 2,5 % ± 15 % for d < 5 mm ± 10 % for d 5…20 mm ± 5 % for d > 20 mm 3 ± 5 % ± 5 % ± 20 % for d < 5 mm ± 15 % for d 5…20 mm ± 7 % for ∆εd > 20 mm 4 ± 10 % ± 10 % ± 30 % for d < 5 mm ± 20 % for d 5…20 mm ± 15 % for d > 20 mm a Whichever gives the largest numerical tolerance.
4.3.3 Compressive stress or compressive strength Compressive stress at 10 % deformation, σ10, or the compressive strength, σm, shall be determined 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; 1 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. The labelled level shall indicate the level for compressive stress at 10 % deformation, CS(10), or the level for compressive strength, CS(Y), whichever is the smaller or both, CS(10\Y), if the smaller one cannot be identified (e.g. CS(10)90 or CS(Y)90 or CS(10\Y)90). 4.3.4 Tensile strength and elongation in length and width Tensile strength σlt of board materials < 20 mm shall be determined in accordance with EN ISO 1798. The value of the tensile strength shall be determined in length (TEL) and width (TEw). No test result shall be less than the declared level, chosen from the following values: 1 kPa; 5 kPa; 7,5 kPa; 10 kPa; 15 kPa; 20 kPa; SIST EN 16069:2013

25 kPa; 30 kPa; 40 kPa; 50 kPa; 60 kPa; 70 kPa; 80 kPa; 90 kPa; 100 kPa; 150 kPa; 200 kPa; 250 kPa; 300 kPa; 400 kPa; 500 kPa; 600 kPa; 700 kPa (e.g. TR200). The value of the tensile elongation shall be determined in length -(TEL) and width (TEw). No test result shall be less than the declared level; the level shall be declared in steps of 10 %. 4.3.5 Point load Point load, Fp, shall be determined in accordance with EN 12430 and declared in levels with steps of 50 N. No test result shall be less than the declared level. 4.3.6 Compressive creep Compressive creep, Xct, and total thickness reduction, Xt, shall be determined after at least one hundred and twenty two days of testing at a declared compressive stress, σc, given in steps of at least 1 kPa, and the results shall be extrapolated thirty times, corresponding to ten years, to obtain the declared level in accordance with EN 1606. Compressive creep shall be declared in levels, i2, and total thickness reduction shall be declared in levels, i1, with steps of 0,1 mm at the declared stress. No test result shall exceed the declared level at the declared stress. NOTE 1 Referring to the designation code CC(i1/i2/y)σc, according to Clause 6, a declared level CC(2,5/2/10)50, for example, indicates a value not exceeding 2 mm for compressive creep and 2,5 mm for total thickness reduction after extrapolation at 10 years (i.e. 30 times one hundred twenty two days of testing) under a declared stress of 50 kPa. NOTE 2 Testing times. According to EN 1606: the procedure at 10, 25 and 50 years respectively require the following testing times: Extrapolation timeyears Minimum testing timedays 10 122 25 304 50 608
4.3.7 Water absorption
4.3.7.1 Short term water absorption Short term water absorption by partial immersion, Wp, shall be determined in accordance with EN 1609. No test result shall exceed 1,0 kg/m2. 4.3.7.2 Long term water absorption
Long term water absorption by immersion shall be determined in accordance with EN 12087, using the method partial immersion (partial 10 mm, 28 d) or the method total immersion. No test result of the water absorption by total immersion and partial immersion, WL(T) and WL(P) shall exceed the declared values. 4.3.8 Water vapour transmission Water vapour transmission properties shall be determined in accordance with EN 12086, and declared as the water vapour diffusion resistance factor, µ, for homogeneous products and as the water vapour resistance, Z, for faced or non-homogeneous products. No test result of µ shall be greater than the declared value and no test result of Z shall be less than the declared value. Alternatively for the declaration of the water vapour diffusion resistance factor, µ, of PEF products, the values quoted in EN ISO 10456 may be used. SIST EN 16069:2013

Class Tolerances Board Sheet T5 ± 5 mm < 50 mm, +5/–5 mm ≥ 50 mm ± 20 % or ± 3 mma T6 ± 3 mm < 50 mm, +5/–2 mm ≥ 50 mm ± 20 % or ± 2 mma T7 ± 2 mm < 50 mm, +3/–2 mm ≥ 50 mm ± 15 % or ± 1 mma T8 ± 1 mm ± 10 % or ± 0,5 mma T9 –0 mm/+1 mm –0 %/+10 % or –0/+ 0,5 mma a Whichever gives the lowest numerical tolerance.
The declared value of dL should preferably be indicated in steps of 1 mm. 4.3.10.3 Thickness, dB The thickness, dB, shall be determined according to EN 12431 with a pause of 300 s before measuring dB. No test result shall exceed the value, given in Table 3, for the declared value. 4.3.10.4 Compressibility c Compressibility, c, shall be determined as the difference between dL and dB for products in classes T5 to T9 (see 4.3.10.2). No test result shall exceed the value given in Table 4, for the declared level. A test result is the mean of the readings for the number of test specimens tested. SIST EN 16069:2013

Table 4 — Levels for compressibility Level Imposed load on the product
kPa Compressibility, c Nominal compressibility mm Tolerance test results mm CP5 ≤ 2,0 ≤ 5 ≤ 2 mm for dL < 35 mm ≤ 3 mm for dL ≥ 35 mm CP4 ≤ 3,0 ≤ 4 CP3 ≤ 4,0 ≤ 3 CP2 ≤ 5,0 ≤ 2 ≤ 1 mm for dL < 35 mm ≤ 2 mm for dL ≥ 35 mm CP1 < 2,0 ≤ 1 ≤ 0,5 mm for dL < 10 mm ≤ 1 mm for dL ≥ 10 mm
NOTE The levels of the imposed load on the product screed are taken from EN 1991-1-1. 4.3.10.5 Long term thickness reduction If the imposed load on the screed exceeds 5 kPa only products having a declared level of compressibility of CP2 may be used and their long term thickness reduction shall be det
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