EN 13171:2001
(Main)Thermal insulating products for buildings - Factory made wood fibre (WF) products - Specification
Thermal insulating products for buildings - Factory made wood fibre (WF) products - Specification
This European Standard specifies the requirements for factory-made products of wood fibres, with or without facings or coatings and with or without integral reinforcement, which are used for the thermal insulation of buildings. The products are manufactured in the form of rolls, felts, slabs or boards. The standard also covers multilayered boards and slabs and composite insulation boards and slabs. The standard describes product characteristics and includes procedures for testing, marking and labelling.
Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte Produkte aus Holzfasern (WF) - Spezifikation
Diese Europäische Norm legt die Anforderungen an werkmäßig hergestellte Erzeugnisse aus Holzfasern einschließlich etwaiger Kaschierungen und Beschichtungen fest, die zur Wärmedammung von Gebäuden verwendet werden. 1) Die Produkte werden in Form von Rollen, Formstücken, Matten oder Platten hergestellt. Diese Norm beschreibt Stoffeigenschaften und enthält Prüfverfahren sowie Festlegungen für den Übereinstimmungsnachweis, die Kennzeichnung und die Etikettierung. Dämmstoffe nach dieser Norm werden auch in vorgefertigten Wärmedämmsystemen sowie Verbundelementen verwendet. Brauchbarkeitsnachweise für derartige Systeme mit Holzfaserdämmstoffen werden nicht durch diese Norm abgedeckt. Diese Norm legt keine Anforderungsniveaus für eine vorgegebene Eigenschaft fest, die die Gebrauchstauglichkeit für einen bestimmten Anwendungsfall gewährleisten. Die jeweils erforderlichen Klassen und Stufen für eine vorgegebene Verwendung können aus Regelwerken oder anderen dieser Norm nicht widersprechenden Normen entnommen werden. Diese Norm gilt nicht für Produkte mit einem Nennwert des Wärmedurchlasswiderstandes von weniger als 0,5 m². K/W oder deren Nennwert der Wärmeleitfähigkeit größer als 0,070 W/(m.K) bei 10°C Mitteltemperatur ist. Diese Norm gilt nicht für an der Baustelle (in situ) Hergestellte WärmedÄmmstoffe sowie für Produkte, die zur Wärmedämmung von haus-oder betriebstechnischen Anlagen vorgesehen sind.
Produits isolants thermiques pour le bâtiment - Produits manufacturés en fibres de bois (WF) - Spécification
La présente Norme européenne spécifie les exigences auxquelles doivent satisfaire les produits manufacturés en fibre de bois, avec ou sans parements, utilisés pour l'isolation thermique des bâtiments ). Les produits sont fabriqués sous forme de rouleaux, bandes, feutres, panneaux ou plaques.
La présente norme décrit les caractéristiques du produit et inclut les procédures d'essai, d'évaluation de la conformité, de marquage et d'étiquetage.
Les produits du domaine d'application de la présente norme sont également utilisés dans des systèmes d'isolation thermique et dans des panneaux composites préfabriqués; la performance des systèmes dans lesquels entrent ces produits n'est pas définie.
La présente norme ne spécifie pas, pour une propriété donnée, le niveau exigé que doit atteindre un produit pour démontrer son aptitude à l'emploi dans une application particulière. Les niveaux requis pour une application donnée figurent dans les réglementations, ou normes non conflictuelles.
Les produits dont la résistance thermique déclarée à une température de 10 °C est inférieure à 0,50 m2×K/W ou dont la conductivité thermique déclarée à une température de 10 °C est supérieure à 0,070 W/(m×K) ne sont pas du domaine d'application de la présente norme.
Les produits mis en ¿uvre in situ et ceux destinés à être utilisés pour l'isolation des équipements du bâtiment et des installations industrielles ne sont pas du domaine d'application de la présente norme.
Toplotnoizolacijski proizvodi za stavbe – Proizvodi iz lesnih vlaken (WF) - Specifikacija
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Thermal insulating products for buildings - Factory made wood fibre (WF) products - SpecificationToplotnoizolacijski proizvodi za stavbe – Proizvodi iz lesnih vlaken (WF) - SpecifikacijaProduits isolants thermiques pour le bâtiment - Produits manufacturés en fibres de bois (WF) - SpécificationWärmedämmstoffe für Gebäude - Werkmäßig hergestellte Produkte aus Holzfasern (WF) - Spezifikation91.100.60Thermal and sound insulating materialsICS:SIST EN 13171:2002enTa slovenski standard je istoveten z:EN 13171:200101-marec-2002SIST EN 13171:2002SLOVENSKI
STANDARD
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13171May 2001ICS 91.100.60English versionThermal insulating products for buildings - Factory made woodfibre (WF) products - SpecificationProduits isolants thermiques pour le bâtiment - Produitsmanufacturés en fibres de bois (WF) - SpécificationWärmedämmstoffe für Gebäude - Werkmäßig hergestellteProdukte aus Holzfasern (WF) - SpezifikationThis European Standard was approved by CEN on 16 April 2001.CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this EuropeanStandard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such nationalstandards may be obtained on application to the 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 translationunder the responsibility of a CEN member into its own language and notified to the Management Centre has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece,Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2001 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13171:2001 E
Page 2EN 13171:2001ContentsPageForeword.31Scope.42Normative references.43Terms, definitions, symbols, units and abbreviated terms.54Requirements.85Test methods.146Designation code.167Evaluation of conformity.168Marking and labelling.17Annex A (normative)
Determination of the declared values of thermal resistance and thermalconductivity.18Annex B (normative) Factory production control.20Annex C (informative)
Additional properties.22Annex D (informative)
Examples for the determination of the declared values of thermalresistance and thermal conductivity for a product or a product group.23Annex ZA (informative)
Clauses of this European Standard addressing the provisions of theEU Construction Products Directive.25Bibliography.30TablesTable 1 – Level and classes for thickness tolerances.9Table 2 – Classes of dimensional stability under specified temperature and humidity.10Table 3 – Levels for compressive stress or compressive strength.10Table 4 – Levels for tensile strength perpendicular to faces.11Table 5 – Levels for short term water absorption by partial immersion.11Table 6 – Levels for dynamic stiffness.12Table 7 – Classes for thickness tolerances.12Table 8 – Levels for compressibility.12Table 9 – Test methods, test specimens and conditions.15Table A.1 – Values for k for one sided 90 % tolerance interval with a confidence level of 90 %.19Table B.1 – Minimum product testing frequencies.20Table B.2 - Minimum product testing frequencies for the reaction to fire characteristics.21Table C.1 – Test methods, test specimens, conditions and minimum testing frequencies.22Table D.1 –
test results.23Table D.2 – R test results.24Table ZA.1 – Relevant clauses.26Table ZA.2.1 – Systems of attestation of conformity of factory made products for any intended use27Table ZA.2.2 – Systems of attestation of conformity of factory made products for uses subject toregulations on reaction to fire.27Table ZA.3 – Example CE marking information.29
Page 3EN 13171:2001ForewordThis European Standard has been prepared by Technical Committee CEN/TC 88 "Thermal insulating materialsand 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 textor by endorsement, at the latest by November 2001, and conflicting national standards shall be withdrawn at thelatest by March 2003.This European Standard has been prepared under a mandate given to CEN by the European Commission andthe 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 standard.This European Standard contains five annexes:Annex A
(normative) Determination of the declared values of thermal resistance and thermalconductivity;Annex B
(normative)Factory production control;Annex C
(informative) Additional properties;Annex D
(informative)Examples for the determination of the declared values of thermal resistanceand thermal conductivity for a product or a product group;Annex ZA
(informative)Clauses of this European Standard addressing the provisions of the EU Construction Products Directive.This European Standard is one of a series of standards for insulation products used in buildings, but this standardmay be used in other areas where appropriate.In pursuance of Resolution BT 20/1993 revised, CEN/TC 88 have proposed defining the standards listed below asa package of European Standards, setting 21 months after availability as the date of withdrawal (dow) of nationalstandards which conflict with the European Standards of this package.The package of standards comprises the following group of interrelated standards for the specifications of factorymade thermal insulation
products, all of which come within the scope of CEN/TC 88: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 products of
expanded perlite (EPB) – 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.
Page 4EN 13171:2001According to the CEN/CENELEC Internal Regulations, the national standards organizations of the followingcountries are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland,France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden,Switzerland and the United Kingdom.1ScopeThis European Standard specifies the requirements for factory made wood fibre products, with or without facingsor coatings, which are used for the thermal insulation of buildings1). The products are manufactured in the form ofrolls, batts, felts, boards or slabs.This standard describes product characteristics and includes procedures for testing, evaluation of conformity,marking and labelling.Products covered by this standard are also used in prefabricated thermal insulation systems and compositepanels; the performance of systems incorporating these products is not covered.This standard does not specify the required level of a given property to be achieved by a product to demonstratefitness for purpose in a particular application. The classes and levels required for a given application are to befound in regulations or non-conflicting standards.Products with a declared thermal resistance lower than 0,50 m2K/W or a declared thermal conductivity greaterthan 0,070 W/(mK) at 10 C are not covered by this standard.This standard does not cover in situ insulation products and products intended to be used for the insulation ofbuilding equipment and industrial installations.2Normative referencesThis European Standard incorporates by dated or undated reference, provisions from other publications. Thesenormative references are cited at the appropriate places in the text, and the publications are listed hereafter. Fordated references, subsequent amendments to or revisions of any of these publications apply to this EuropeanStandard only when incorporated in it by amendment or revision. For undated references the latest edition of thepublication referred to applies (including amendments).EN ISO 354:1993/A1, Acoustics – Measurement of sound absorption in a reverberation room – Amendment 1:Test specimen mountings for sound absorption tests (ISO 354:1985/AMD 1:1997).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 compressionbehaviour.EN 1602, Thermal insulating products for building applications – Determination of
the aparent density.EN 1603, Thermal insulating products for building applications – Determination of dimensional stability underconstant normal laboratory conditions (23 C/50 % relative humidity).EN 1604:1997, Thermal insulating products for building applications – Determination of dimensional stabilityunder specified temperature and humidity conditions.EN 1606, Thermal insulating products for building applications – Determination of compressive creep.
1) Wood fibre products for applications other than thermal insulation are covered by EN 316, Wood fibre boards-Definition, classification and symbols.
Page 5EN 13171:2001EN 1607, Thermal insulating products for building applications – Determination of tensile strength perpendicular tofaces.EN 1608, Thermal insulating products for building applications – Determination of
tensile strength parallel tofaces.EN 1609, Thermal insulating products for building applications – Determination of short term water absorption bypartial immersion.prEN ISO 9229, Thermal insulation – Definitions of terms (ISO/DIS 9229:1997).EN ISO 11654, Acoustics – Sound absorbers for use in buildings – Rating of sound absorption (ISO 11654:1997).prEN ISO 11925-2, Reaction to fire tests for building products – Part 2: Ignitability when subjected to directimpingement of flame (ISO/DIS 11925-2:1998).EN 12086:1997, Thermal insulating products for building applications – Determination
of
water vapourtransmission properties.EN 12431, Thermal insulating products for building applications – Determination of thickness for floating floorinsulation products.EN 12524:2000, Building materials and products – Hygrothermal properties - Tabulated design values.prEN 12667, Thermal performance of building materials and products – Determination of thermal resistance bymeans 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 meansof guarded hot plate and heat flow meter methods – Thick products of high and medium thermal resistance.EN 13172:2001, Thermal insulating products – Evaluation of conformity.prEN 13501-1, Fire classification of construction products and building elements – Part 1: Classification using testdata from reaction to fire test.prEN ISO 13823:2000, Reaction to fire tests for building products – Building products excluding floorings exposed tothe thermal attack by a single burning item.EN 29052-1, Acoustics – Determination of dynamic stiffness – Part 1: Materials used under floating.floors in dwellings (ISO 9052-1:1989).EN 29053, Acoustics – Determination of airflow resistance (ISO 5053:1991).ISO 12491, Statistical methods for quality control of building materials and components.3Terms, definitions, symbols, units and abbreviated terms3.1Terms and definitionsFor the purposes of this standard, the following terms and definitions apply.3.1.1
Terms and definitions as given in prEN ISO 92293.1.1.1wood fibre productsinsulation products manufactured from wood fibres with or without the addition of bonding agents and/or additives.Mechanically bonded products are also included within this definition3.1.1.2mat flexible fibrous insulation product supplied rolled or flat, which may be faced but not enclosed
Page 6EN 13171:20013.1.1.3batt portion of a mat in the form of a rectangular piece, generally between 1 m and 3 m in length, and usually supplied flator folded3.1.1.4 feltmechanically and/or binder bonded insulation product3.1.1.5roll insulation product supplied in the form of a spirally wound cylinder3.1.1.6lamella rollstrips of wood fibre boards, bonded to a flexible facing, supplied in a bound, which leads to a continuous insulatinglayer, when the roll is unrolled3.1.1.7 board; slab rigid or semi-rigid (insulation) product of rectangular shape and cross section in which the thickness is uniform andsubstantially smaller than the other dimensionsNOTE
Boards are usually more rigid than slabs. They may also be supplied in tapered form.3.1.2
Additional terms and definitions3.1.2.1levelthe given value which is the upper or lower limit of a requirement. The level is given by the declared value of thecharacteristic concerned3.1.2.2classa combination of two levels of the same property between which the performance shall fall3.2Symbols, units and abbreviated termsSymbols and units used in this standard:pis the practical sound absorption coefficient–wis the weighted sound absorption coefficient–bis the widthmmcis the compressibility mmdis the thicknessmmdBis the thickness under a load of 2 kPa after removal of an additional load of 48 kPammdLis the thickness under a load of 250 PammdN
is the nominal thickness of the productmmdS
is the thickness of the test specimenmmbis the relative change in width%dis the relative change in thickness%lis the relative change in length%sis the relative change in flatnessmm/mFpis the compressive force at critical pointkNk
is a factor related to the number of test results available–
Page 7EN 13171:2001lis the lengthmm90/90
is the 90 % fractile with a confidence level of 90 % for the thermal conductivityW/(mK)Dis the declared thermal conductivityW/(mK)i
is one test result of thermal conductivityW/(mK)mean
is the mean thermal conductivityW/(mK)is the water vapour diffusion resistance factor–n
is the number of test results–R90/90 is the 90 % fractile with a confidence level of 90 % for the thermal resistancem2K/WRD
is the declared thermal resistancem2K/WRi
is one test result of thermal resistancem2K/WRmean
is the mean thermal resistancem2K/Wa
is the apparent densitykg/m³Sb
is the deviation from squareness on length and widthmm/mSmax
is the deviation from flatnessmmsR
is the estimate of the standard deviation of the thermal resistancem2K/Ws
is the estimate of the standard deviation of the thermal conductivityW/(mK)s’is the dynamic stiffnessMN/m3cis the declared compressive stresskpa10is the compressive stress at 10 % deformationkPamis the compressive strengthkPamtis the tensile strength perpendicular to faceskPatis the tensile strength parallel to faceskPaWp is the short-term water absorptionkg/m2X0is the initial deformation after 60 s from the beginning of loadingmmXctis the compressive creepmmXt
is the deformation at time t (total thickness reduction)mmZis the water vapour resistancem2hPa/mgAFis the symbol of the declared level of airflow resistanceAPis the symbol of the declared level of practical sound absorption coefficientAWis the symbol of the declared level of weighted sound absorption coefficientCC(i1/i2 mm,y)c is the symbol of the declared level for compressive creepCPis the symbol of the declared level for compressibilityCS(10\Y)is the symbol of the declared level for compressive stress or strengthDS(T+)is the symbol of the declared value for dimensional stability at specified temperatureDS(TH)is the symbol of the declared value for dimensional stability under specified temperature andhumidityMUis the symbol of the declared value for water vapour diffusion resistance factorSDis the symbol of the declared level of dynamic stiffnessTis the symbol of the declared class for thickness tolerancesTRis the symbol of the declared level for tensile strength perpendicular to facesWSis the symbol of the declared level for short term water absorptionZis the symbol of the declared value for water vapour resistanceAbbreviated terms used in this standard:WF is Wood FibreITT is Initial Type Test
Page 8EN 13171:20014Requirements4.1GeneralProduct properties shall be assessed in accordance with clause 5. To comply with this standard, products shall meetthe requirements of 4.2, and the requirements of 4.3 as appropriate.NOTE
Information on additional properties is given in annex C.One test result for a product property is the average of the measured values on the number of test specimens givenin Table 9.4.2For all applications4.2.1Thermal resistance and thermal conductivityThermal resistance and thermal conductivity shall be based upon measurements carried out in accordance with prEN12667 or EN 12939 for thick products.The thermal resistance and thermal conductivity shall be determined in accordance with annex A and declared by themanufacturer according to the following:– the reference mean temperature shall be 10 C;– the measured values shall be expressed with three significant figures;– the thermal resistance, RD, shall always be declared. The thermal conductivity, D, shall be declared wherepossible;– the declared thermal resistance, RD, and the declared thermal conductivity, D, shall be given as limit valuesrepresenting at least 90 % of the production, determined with a confidence level of 90 %;– the value of thermal conductivity, 90/90, shall be rounded upwards to the nearest 0,001 W/(mK) and declared asD in levels with steps of 0,001 W/(mK);– the declared thermal resistance, RD, shall be calculated from the nominal thickness, dN, and the correspondingthermal conductivity, 90/90;– the value of thermal resistance, R90/90, when calculated from the nominal thickness, dN, and the correspondingdeclared thermal conductivity, 90/90, shall be rounded upwards to the nearest 0,05 m2K/W, and declared inlevels with steps of 0,05 m2K/W;– the value of R90/90, for those products for which only the thermal resistance is measured directly, shall berounded downwards to the nearest 0,05 m2K/W and declared as RD in levels with steps of 0,05 m2K/W.Examples of the determination of the declared values of thermal resistance, RD, and the thermal conductivity, D,are given in annex D.4.2.2Length and widthLength, l, and width, b, shall be determined in accordance with EN 822. No test result shall deviate from thenominal values by more than the following:± 2 %for length (for rolls, matts and felts no upper limit),± 1,5 %for width.
Page 9EN 13171:20014.2.3ThicknessThickness, d, for products not intended for floating floors shall be determined in accordance with EN 823 under aload of (250
5) Pa. No test result shall deviate from the nominal thickness, dN, by more than the tolerances givenin Table 1 for the labelled level or class.Table 1 – Level and classes for thickness tolerancesLevel orclassTolerancesT1–5 mm+15 % or +15 mmaT2–4 mm+10 % or +10 mmaT3–3 mm+5 % or +5 mmaT4–1 mm+3 mmaWhichever gives the smallest numerical toleranceThis test shall not be performed when the tests described in 4.3.10 are used.4.2.4SquarenessSquareness shall be determined in accordance with EN 824. The deviation from squareness on length and width,Sb, of boards and slabs shall not exceed 5 mm/m.4.2.5FlatnessFlatness shall be determined in accordance with EN 825. The deviation from flatness, of boards and slabs, Smax,shall not exceed 6 mm.4.2.6Dimensional stability4.2.6.1Dimensional stability under constant normal laboratory conditionsDimensional stability under constant normal laboratory conditions (23 C/50 % relative humidity) shall bedetermined in accordance with EN 1603.The relative changes in length, l and width, b, shall not exceed 0,5 %and in thickness, d, 1 %. The relative change in flatness, s, shall not exceed 1 mm/m.4.2.6.2Dimensional stability under specified temperature and humidity conditionsDimensional stability under specified temperature and humidity conditions shall be determined in accordance withEN 1604, the test shall be carried out after storage for 48 h at (23 ± 2) C and (90 ± 5) % relative humidity. The testspecimens shall then be reconditioned at (23 ± 2) C and (50 ± 5) % relative humidity for 24 h. The relativechanges in length, l, width, b, and in thickness, d, shall not exceed 1 %.This test shall not be performed when the more severe test, described in 4.3.2.2, is used.4.2.7Tensile strength parallel to facesTensile strength parallel to faces, t, shall be determined in accordance with EN 1608. For handling purposes,products shall have a tensile strength parallel to faces of 10 kPa.The test is not necessary for faced products or if one of the tests is carried out in accordance 4.3.3 or 4.3.4.4.2.8Reaction to fireReaction to fire classification (Euroclasses) shall be determined in accordance with prEN 13501-1.
Page 10EN 13171:20014.3For specific applications4.3.1GeneralIf there is no requirement for a property, described in 4.3, for a product in use, then the property does not needto be determined and declared by the manufacturer.4.3.2Dimensional stability under specified conditions4.3.2.1Dimensional stability at specified temperatureDimensional stability at specified temperature shall be determined in accordance with EN 1604:1997, 7.3. The testshall be carried out after storage for 48 h at (60 ± 2) C. The test specimens shall then be reconditioned at(23 ± 2) C and (50 ± 5) % relative humidity for 24 h. The relative changes in length, l, width, b, shall notexceed 0,5 %, the relative changes in thickness, d, shall not exceed 1 %.4.3.2.2
Dimensional stability under specified temperature and humidity conditonsDimensional stability under specified temperature and humidity conditions shall be determined in accordance withEN 1604 and the conditions given in Table 2. The test specimens shall then be reconditioned at (23 ± 2) C and(50 ± 5) % for 24 h. The relative changes in length, l, width, b and thickness, d, shall not exceed the valuesgiven in Table 2 for the declared class.Table 2 – Classes of dimensional stability under specified temperature and humidityClassConditionsRequirementDS (70,-) 148 h, 70 °C 1 %DS (70,-) 248 h, 70 °C 2 %DS (70,-) 348 h, 70 °C 3 %DS (70, 90) 148 h, 70 °C, 90 % 1 %DS (70, 90) 248 h, 70 °C, 90 % 2 %DS (70, 90) 348 h, 70 °C, 90 % 3 %4.3.3Compressive stress or compressive strengthCompressive stress at 10 % deformation, 10, or the compressive strength, m, shall be determined in accordancewith EN 826. No test result for either the compressive stress at 10 % deformation, 10, or the compressivestrength, m, whichever is the smaller, shall be less than the value, given in Table 3, for the declared level.Table 3 – Levels for compressive stress or compressive strengthLevelRequirementkPaCS(10\Y)5 5,0CS(10\Y)10 10CS(10\Y)20 20CS(10\Y)40 40CS(10\Y)70 70CS(10\Y)1001004.3.4Tensile strength perpendicular to facesTensile strength perpendicular to the faces, mt, shall be determined in accordance with EN 1607. No test resultshall be less than the value given in Table 4 for the declared level.
Page 11EN 13171:2001Table 4 – Levels for tensile strength perpendicular to facesLevelRequirementkPaTR11,0TR2,52,5TR55,0TR7,57,5TR1010TR1515TR2020TR3030TR4040TR5050TR6060TR70704.3.5Point loadThe effects of foot traffic shall be assessed by means of determination of compressive stress at 10 % deformationor compressive strength in accordance with EN 826, see 4.3.3.4.3.6Compressive creepCompressive creep, Xct, and total thickness reduction, Xt, shall be determined after at least one hundred andtwenty two days of testing at a declared compressive stress, c, given in steps of at least 1 kPa and the resultsextrapolated thirty times corresponding to ten years, to obtain the declared levels in accordance with EN 1606.Compressive creep shall be declared in levels, i2, and the 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.4.3.7Short term water absorptionShort term water absorption by partial immersion, Wp
shall be determined in accordance with EN 1609 includingany facings or coatings. No test result shall exceed the value given in Table 5 for the declared level.Table 5 – Levels for short term water absorption by partial immersionLevelRequirementkg/m²WS0,5 0,5WS1,0 1,0WS2,0 2,04.3.8Water vapour transmissionWater vapour transmission properties shall be determined in accordance with EN 12086, and declared as thewater vapour diffusion resistance factor, , for homogeneous products and as the water vapour resistance, Z, forfaced or non-homogeneous products. No test result of the water vapour diffusion resistance factor shall be greaterand no test result of the water vapour resistance shall be less than the declared value.In the absence of measurement datas, the water vapour diffusion resistance factor, , of unfaced wood fibreproducts or products with a facing or coating with an open structure, e. g. tissue, can be taken from EN12524:2000 Table 2.
Page 12EN 13171:20014.3.9Dynamic stiffnessDynamic stiffness, s', shall be determined in accordance with EN 29052-1, without preloading. No test result shallexceed the value given in Table 6 for the declared level.Table 6 – Levels for dynamic stiffnessLevelRequirementMN/m³SD55,0SD77,0SD1010SD1515SD2020SD3030SD4040SD5050For products in levels CP2 (see 4.3.10.3), if the imposed load exceeds 5,0 kPa, the dynamic stiffness shall bedetermined under the imposed load plus the self-weight of the screed.4.3.10Compressibility4.3.10.1
Thickness, dLThickness, dL, shall be determined in accordance with EN 12431 under a load of 250 Pa. No test res
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