EN 13168:2008

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Toplotnoizolacijski proizvodi za stavbe - Proizvodi iz lesne volne (WW) - SpecifikacijaWärmedämmstoffe für Gebäude - Werkmäßig hergestellte Produkte aus Holzwolle (WW) - SpezifikationProduits isolants thermiques pour le bâtiment - Produits manufacturés en laine de bois (WW) - SpécificationThermal insulation products for buildings - Factory made wood wool (WW) products - Specification91.100.60Thermal and sound insulating materialsICS:Ta slovenski standard je istoveten z:EN 13168:2008SIST EN 13168:2009en,fr,de01-februar-2009SIST EN 13168:2009SLOVENSKI
STANDARDSIST EN 13168:2002/AC:2006SIST EN 13168:2002/A1:2004SIST EN 13168:20021DGRPHãþD

EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 13168November 2008ICS 91.100.60Supersedes EN 13168:2001
English VersionThermal insulation products for buildings - Factory made woodwool (WW) products - SpecificationProduits isolants thermiques pour le bâtiment - Produitsmanufacturés en laine de bois (WW) - SpécificationWärmedämmstoffe für Gebäude - Werkmäßig hergestellteProdukte aus Holzwolle (WW) - SpezifikationThis European Standard was approved by CEN on 18 October 2008.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 CEN 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 CEN Management Centre has the same status as theofficial versions.CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Cyprus, Czech Republic, Denmark, Estonia, Finland,France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal,Romania, Slovakia, Slovenia, Spain, Sweden, Switzerland and United Kingdom.EUROPEAN COMMITTEE FOR STANDARDIZATIONCOMITÉ EUROPÉEN DE NORMALISATIONEUROPÄISCHES KOMITEE FÜR NORMUNGManagement Centre: rue de Stassart, 36
B-1050 Brussels© 2008 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 13168:2008: ESIST EN 13168:2009

Determination of the declared values of thermal conductivity and
thermal resistance . 21 Annex B (normative)
Factory production control . 23 Annex C (normative)
Specific test methods . 27 Annex D (normative)
Specific items concerning this standard . 30 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive. 33
Tables Table 1 — Classes for length and width tolerances . 12 Table 2 — Classes for thickness tolerances . 12 Table 3 — Levels for the deviation from squareness . 12 Table 4 — Levels for deviation from flatness . 13 Table 5 — Levels for compressive stress or compressive strength . 13 Table 6 — Levels for chloride content . 14 Table 7 — Levels for tensile strength perpendicular to faces . 14 Table 8 — Test methods, test specimens and conditions. 18 Table A.1 — Values for k for one sided 90 % tolerance interval with a confidence level of 90 % . 22 Table B.1 — Minimum product testing frequencies . 23 Table B.2 — Minimum product testing frequencies for the reaction to fire characteristics . 25 Table D.1 — Levels for bending strength . 31 Table ZA.1 — Relevant clauses for Wood wool and intended use . 34 Table ZA.2 — Systems of attestation of conformity . 35 Table ZA.3 — Assignment of evaluation of conformity tasks for products under system 1 . 36 Table ZA.4 — Assignment of evaluation of conformity tasks for products under system 3 or system 3 combined with system 4 for reaction to fire . 37 SIST EN 13168:2009

Figures Figure C.1 — Test rig for load resistance of slabs . 28 Figure C.2 — Test rig for impact resistance of slabs . 29 Figure ZA.1 — Example CE marking information . 40
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 the apparent density EN 1604, Thermal insulation 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 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 SIST EN 13168:2009

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 11654:1997) 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 11925-2:2002) ISO 12491, Statistical methods for quality control of building materials and components 3 Terms, definitions, symbols, units and abbreviated terms 3.1 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1.1 Terms and definitions as given in EN ISO 9229:2007 3.1.1.1 wood wool long shavings of wood SIST EN 13168:2009

NOTE The level is given by the declared value of the characteristic concerned. 3.1.2.2 class combination of two levels of the same property between which the performance shall fall 3.1.2.3 inorganic cementing agent binder used for producing wood wool products are portland cement, magnesite and a combination of cement and lime 3.1.2.4 wood wool board wood wool slab rigid insulation product manufactured from loose wood wool, bonded with a mineral binder and compressed to its final thickness 3.1.2.5 composite wood wool slab composite insulation product in which wood wool is bonded with a mineral binder, on one or both face(s) to other insulating materials
EXAMPLE mineral wool, foamed rigid cellular plastics.
NOTE 1 The final thickness of the “two layer” or “three layer” products, produced in this way, is determined during manufacture.
NOTE 2 The wood wool layer(s) of composite wood wool slabs cover the bonded insulation layer completely. 3.2 Symbols, units and abbreviated terms 3.2.1 Symbols and units used in this standard: αp is the practical sound absorption coefficient – αw is the weighted sound absorption coefficient – b is the width mm D is the thickness mm dN is the nominal thickness of the product mm ∆εb is the relative change in width % SIST EN 13168:2009

is the symbol of the declared level for compressive stress or strength* DS(L) is the symbol of the declared value for dimensional stability under specified load andtemperature conditions DS(TH) is the symbol of the declared dimensional stability at specified temperature and relativehumidity conditions L is the symbol of the declared class for length tolerances MUi is the symbol of the declared value for water vapour diffusion resistance factor* P Is the symbol of the declared value for flatness tolerances PL(2)i is the symbol of the declared level of point load for 2 mm deformation* S is the symbol of the declared class for squareness tolerances Ti is the symbol of the declared class for thickness tolerances* Tri is the symbol of the declared level for tensile strength perpendicular to faces* W is the symbol of the declared class for width tolerances WS is the symbol of the declared level for short term water absorption Zi is the symbol of the declared value for water vapour resistance* * "i” is the relevant class or level, "1c” is the compressive stress, and "y” is the number of years 3.2.2 Abbreviated terms used in this standard: WW iWood Wool board, slab WW-C Composite Wood Wool board, slab WW-C/3 xx 3-layered Composite Wood Wool board, slab in combination with xx. NOTE xx stands for the suitable insulation material used. ITT Initial Type Test RTF Reaction To Fire FPC Factory Production Control 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. NOTE Information on additional properties is given in Annex D.
One test result for a product property is the average of the measured values on the number of test specimens given in Table 8. SIST EN 13168:2009

Table 1 — Classes for length and width tolerances Class Tolerances mm L1 +5, –10 L2 +3, –5 L3 ± 1a; ± 2b W1 ± 3 W2 ± 1 a For nominal length ≤ 1 250 mm. b For nominal length > 1 250 mm.
4.2.3 Thickness Thickness, d, shall be determined in accordance with EN 823. No test result shall deviate from the nominal thickness, dN, by more than the tolerances given in Table 2 for the declared class. Table 2 — Classes for thickness tolerances Class Tolerances mm Nominal thickness mm T1 +3, –2 ≤ 100 T2 ± 1 T3 +4, –3 > 100 T4 ± 2
4.2.4 Squareness Squareness, Sb, shall be determined in accordance with EN 824. The deviation from squareness shall not exceed the requirements given in Table 3 for the declared level. Table 3 — Levels for the deviation from squareness Level Requirement mm/m S1 ≤ 6 S2 ≤ 4 S3 ≤ 2
4.2.6 Compressive stress or compressive strength Compression 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 or the compressive strength, which ever is the smaller, shall be less than the value, given in Table 5 for the declared level. Table 5 — Levels for compressive stress or compressive strength Level Requirement kPa CS(10/Y)20 ≥ 20 CS(10/Y)30 ≥ 30 CS(10/Y)50 ≥ 50 CS(10/Y)75 ≥ 75 CS(10/Y)100 ≥ 100 CS(10/Y)150 ≥ 150 CS(10/Y)200 ≥ 200 CS(10/Y)300 ≥ 300 CS(10/Y)500 ≥ 500 CS(10/Y)750 ≥ 750 CS(10/Y)1000 ≥ 1000
For handling purposes, all products shall have as a minimum level CS(10/Y)20 4.2.7 Apparent density and mass per unit area The apparent density of wood wool slabs, a, shall be determined in accordance with EN 1602. No test result shall differ from the declared value by more than ± 10 %. The mass per unit area of composite wood wool slabs shall be determined from measurements of mass and shall be determined in accordance with EN 1602. No test result shall differ from the declared value by more than ± 10 %. SIST EN 13168:2009

4.2.9 Dimensional stability under specified temperature and humidity conditions Dimensional stability under specified temperature and humidity conditions of wood wool slabs shall be determined in accordance with EN 1604. The test shall be carried out after storage for 48 h at (70 ± 2) °C and (90 ± 5) % relative humidity. The relative change in thickness, ∆εd, shall not exceed 3,0 %. The relative changes in length, ∆εl, and width, ∆εb, shall not exceed 0,5 %. 4.2.10 Tensile strength perpendicular to faces Tensile strength perpendicular to faces, σmt, shall be determined in accordance with EN 1607. No test result shall be lower than the value given in Table 7 for the declared level. Table 7 — Levels for tensile strength perpendicular to faces Level Requirement kPa TR5
≥ 5,0 TR7,5
≥ 7,5 TR10
≥ 10 TR15
≥ 15 TR20
≥ 20 TR40
≥ 40 TR70
≥ 70 TR100
≥ 100
For handling purposes, all WW-C products shall have as a minimum level TR5. The tensile strength perpendicular to faces of wood wool slabs shall not be tested. 4.2.11 Reaction to fire Reaction to fire classification (Euroclasses) shall be determined in accordance with EN 13501-1. SIST EN 13168:2009

4.3.11 Load resistance Load resistance shall be determined in accordance with C.2 and results declared by the manufacturer. No test result for slabs with a nominal thickness of 50 mm or greater shall be less than 2,2 kN, when tested in accordance with C.2. 4.3.12 Impact resistance Impact resistance shall be determined in accordance with C.3. Slabs with a nominal thickness of 50 mm or greater claiming impact resistance shall be capable of withstanding the impact of a 45 kg mass dropped from a 1 200 mm height and afterwards of a static load of 1,32 kN according to the test in C.3. Impact resistance tests shall not be applied to slabs previously tested under load resistance. 5 Test methods 5.1 Sampling Test specimens shall be taken from the same sample. SIST EN 13168:2009

Table 8 — Test methods, test specimens and conditions Dimensions in millimetres Clause Test method Test specimen length and widtha Minimum number of measurements to get one test result Specific conditions No Title 4.2.1 Thermal resistance – and thermal conductivity EN 12667 or EN 12939 See EN 12667 or EN 12939 1 Dry conditions also applicable, see Annex D 4.2.2 Length and width EN 822 Full size 1 – 4.2.3 Thickness EN 823 Full size 1 – 4.2.4 Squareness EN 824 Full size 1 – 4.2.5 Flatness EN 825 Full size 1 – 4.2.6 Compressive stress or compressive strength EN 826 200 × 200 300 × 300 5 3 – 4.2.7 Apparent density and mass per unit area EN 1602 Full size 5 – 4.2.8 Chloride content C.1 30 × 100 3 – 4.2.9 Dimensional stability under specified temperature and humidity conditions EN 1604 200 × 200 3 - 4.2.10 Tensile strength perpendicular to faces EN 1607 100 × 100 200 × 200 5 3 – 4.2.11 Reaction to fire See EN 13501-1 – 4.3.2 Dimensional stability under specified load and temperature conditions
EN 1605 200 × 200 3 – 4.3.3 Point load EN 12430 300 × 300 3 – 4.3.4 Bending strength EN 12089 – 5 Method A 4.3.5 Water vapour transmission EN 12086 See 6.1 in EN 12086:1997 3 b 4.3.6 Water absorption EN 1609 200 × 200 4 Method A 4.3.7 Compressive creep EN 1606 200 × 200 3 – 4.3.8 Sound absorption EN ISO 354 Minimum 10 m2 1 To be reported 4.3.9 Release of dangerous substances
c – – – 4.3.10 Continuous Glowing Combustion c – – – 4.3.11 Load resistance C.2 Full size 6 – 4.3.12 Impact resistance
C.3 Full size 6 – a Full-size product thickness, except for 4.2.11. b Exception: When testing products with water vapour barrier, in accordance with EN 12086, the specimen thickness to measure is equal to the water vapour barrier thickness plus 2 mm to 3 mm. c When drafting this standard, no European harmonized test method was available. SIST EN 13168:2009

6 Designation code A designation code for the product shall be given by the manufacturer. The following shall be included except when there is no requirement for a property described in 4.3.  The wood wool abbreviated terms WW, WW-C  This document number EN 13168  Length tolerances Li  Width tolerances Wi  Thickness tolerances Ti  Squareness tolerances Si  Flatness tolerances Pi  Compressive stress or compressive strength CS(10/Y)i  Bending strength (with specified span)
BS(+)  Chloride content Cli  Dimensional stability under specified temperature and rel. humidity conditions DS(TH)  Dimensional stability under specified load DS(L)  Point load PL(2)  Short term water absorption WS  Tensile strength perpendicular to faces TRi  Water vapour transmission MUi or Zi  Compressive creep CC(i1/i2/y) σc  Weighted sound absorption coefficient AWi  Practical sound absorption coefficient Api where “I” shall be used to indicate the relevant class or level, “σc” shall be used to indicate the compressive stress and “y” to indicate the number of years. The designation code for a wood wool product is illustrated by the following example: WW — EN 13168 — L3 — W1 — T2 — S3 — P2 — CS(10)300 — BS 2000(500) — Cl3 — MU5 NOTE The characteristics determined in 4.2 are not included in the designation code if a limit value (threshold value) is given for the product. SIST EN 13168:2009

For the EC certificate and declaration of conformity, as appropriate, see ZA.2.2. 8 Marking and labelling Products conforming to this standard shall be clearly marked, either on the product or on the label or the packaging, with the following information:  product name or other identifying characteristic;  name or identifying mark and address of the manufacturer or his authorised representative;  shift or time of production and manufacturing plant or traceability code;  reaction to fire class;  declared thermal resistance;  declared thermal conductivity, as appropriate;  nominal thickness;  designation code as given in clause 6;  type of facing, if any;  type of binder;  nominal length, nominal width;  number of pieces and area in the package, as appropriate. NOTE For CE marking and labelling see ZA.3. SIST EN 13168:2009

Determination of the declared values of thermal conductivity and
thermal resistance A.1 General It is the responsibility of the manufacturer to determine the declared values of thermal resistance and thermal conductivity. He will have to demonstrate conformity of the product to its declared values. The declared values of thermal resistance and thermal conductivity of a product are the expected values of these properties during an economically reasonable working life under normal conditions, assessed through measured data at reference conditions. A.2 Input data The manufacturer shall have at least ten test results for thermal resistance or thermal conductivity, obtained from internal or external direct measurements in order to calculate the declared values. The direct thermal resistance or thermal conductivity measurements shall be carried out at regular intervals spread over a period of the last 12 months. If less than ten results are available, that period may be extended until ten test results are obtained, but with a maximum period of three years, within which the product and production conditions have not changed significantly. For new products the ten thermal resistance or thermal conductivity test results shall be carried out spread evenly over a minimum period of ten days. The declared values shall be calculated according to the method given in A.3 and shall be recalculated at intervals not exceeding three months of production. A.3 Declared values A.3.1 General The derivation of the declared values RD and λD from the calculated values R90/90 and λ90/90 shall use the rules given in 4.2.1 which include the rounding conditions. A.3.2 Case where thermal resistance and thermal conductivity are declared The declared values RD and λD shall be derived from the calculated values R90/90 and λ90/90 which are determined using the Equations A.1, A.2 and A.3. λ90/90 = λmean + k × sλ (A.1) 1)(12meani−−=∑=nsniλλλ (A.2) R90/90 = dN/λ90/90 (A.3) SIST EN 13168:2009

Factory production control Table B.1 — Minimum product testing frequencies Clause Minimum testing frequencya No Title Direct testing Indirect testing Test method Frequency 4.2.1 Thermal resistance and thermal conductivity 1 every 3 months for each product/product group and indirect testing Mass per unit area or density 1 per 4 h 4.2.2 Length and width 1 per 2 h – – 4.2.3 Thickness 1 per 2 h – – 4.2.4 Squareness 1 per 2 h – – 4.2.5 Flatness 1 per 4 h – – 4.2.6 Compressive stress or compressive strength 1 per year and indirect Mass per unit area or density 1 per 4 h 4.2.7 Apparent density and mass per unit area 1per 2 h – – 4.2.8 Chloride content 1 per year and indirect Density of
Cl–-solution 1 per day 4.2.9 Dimensional stability at specified temperature and humidity conditions ITTb – – 4.2.10 Tensile strength perpendicular to faces 1 per year and indirect Manufacturer‘s method 1 per 8 h 4.2.11 Reaction to fire See Table B.2 See Table B.2 See Table B.2 4.3.2 Dimensional stability under specified load and temperature conditions ITTb – – 4.3.3 Point load ITTb – – 4.3.4 Bending strength 1 per day – – 4.3.5 Water vapour transmission ITTb – – 4.3.6 Water absorption ITTb – – 4.3.7 Compressive creep ITTb – – 4.3.8 Sound absorption ITTb – – 4.3.9
Release of dangerous substances
c – – SIST EN 13168:2009
1 per year and indirect Manufacturer’s method 1 per day a The minimum testing frequencies, expressed in test results, shall be understood as the minimum for each production unit/line under stable conditions. In addition to the testing frequencies given above, testing of relevant properties of the product shall be repeated when changes or modifications are made that are likely to affect the conformity of the product. For mechanical properties, the testing frequencies given are independent of the change of product. In addition the manufacturer shall establish internal rules for process adjustments related to these properties when changing the product. b ITT, see EN 13172. c When drafting this standard, no European harmonized test method was available.
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