Thermal insulation products for buildings - Factory made products of polyethylene foam (PEF) - Specification

This European Standard specifies the requirements for factory made polyethylene foam (PEF) products, with or without facing or coating, which are used for thermal insulation of buildings. The products are manufactured in the form of boards or rolls or other preformed ware.
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 insulating systems and composite panels; 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 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.

Wärmedämmstoffe für Gebäude - Werkmäßig hergestellte Produkte aus Polyethylenschaum (PEF) - Spezifikation

Diese Europäische Norm legt die Anforderungen an werkmäßig hergestellte Produkte aus Polyethylenschaum (PEF) mit oder ohne Kaschierung oder Beschichtung fest, die für die Wärmedämmung von Gebäuden benutzt werden. Die Produkte werden in Form von Platten oder Rollen oder anderer vorgeformter Ware hergestellt.
Die vorliegende Norm beschreibt die Produkteigenschaften und enthält die Prüfverfahren und Festlegungen für die Konformitätsbewertung, die Kennzeichnung und die Etikettierung.
Die in dieser Norm beschriebenen Produkte werden auch in vorgefertigten Wärmedämmsystemen und Mehrschicht Platten angewendet; die Eigenschaften von Systemen, in die diese Produkte integriert sind, werden nicht behandelt.
Diese Norm legt keine Leistungsstufen für eine vorgegebene Eigenschaft fest, die ein Produkt erreichen muss, um für einen bestimmten Anwendungsfall tauglich zu sein. Die für bestimmte Anwendungen benötigten Stufen können Regelwerken oder nicht entgegenstehenden Normen entnommen werden.
Diese Europäische Norm gilt nicht für Produkte, deren Nennwert des Wärmedurchlasswiderstandes niedriger als 0,5 m2K/W oder deren Nennwert der Wärmeleitfähigkeit größer als 0,050 W/(mK) bei 10 °C ist.
Die vorliegende Norm gilt weder für in situ Dämmprodukte noch für Produkte, die zur Dämmung von haustechnischen und betriebstechnischen Anlagen (durch EN 14313 abgedeckt) bestimmt sind. Ferner gilt sie nicht für nichtgeschäumte Materialien wie z.B. Luftpolsterfolien, usw.

Produits isolants thermiques pour le bâtiment - Produits manufacturés en mousse de polyethylene (PEF) - Spécification

La présente Norme européenne spécifie les exigences auxquelles doivent satisfaire les produits manufacturés en mousse de polyéthylène (PEF), avec ou sans parements ou enduits de finition, utilisés pour l'isolation thermique des bâtiments. Les produits sont fabriqués sous forme de panneaux, de rouleaux ou autre produit préformé.
La présente norme décrit les caractéristiques des produits et contient des modes opératoires d'essai, d'évaluation de la conformité, de marquage et d'étiquetage.
Les produits couverts par la présente norme sont également utilisés dans les systèmes d'isolation thermique préfabriqués et les panneaux composites ; les performances des systèmes incorporant ces produits ne sont pas traitées.
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 les normes non conflictuelles.
Les produits dont la résistance thermique déclarée à une température de 10 °C est inférieure à 0,5 m2K/W ou dont la conductivité thermique déclarée à une température de 10 °C est supérieure à 0,050 W/(m×K) ne relèvent pas du domaine d'application de la présente Norme européenne.
Les produits isolants mis en œuvre in situ et les produits destinés à être utilisés pour l’isolation des équipements du bâtiment et des installations industrielles (couverts par l’EN 14313) ne relèvent pas du domaine d’application de la présente norme. Les matériaux non alvéolaires, tels que les films à bulles, les feuilles, etc., sont également exclus.

Toplotnoizolacijski proizvodi za stavbe - Proizvodi iz polietilenske pene (PEF) - Specifikacija

Ta evropski standard določa zahteve za površinsko obdelane ali lakirane ali površinsko neobdelane ali nelakirane proizvode iz polietilenske pene (PEF), ki se uporabljajo za toplotno izolacijo stavb. Proizvodi so proizvedeni v obliki plošč ali kolutov ali v drugih oblikah.
Ta standard opisuje lastnosti proizvodov ter zajema postopke za preskušanje, vrednotenje skladnosti, označevanje in etiketiranje.
Proizvodi iz tega standarda se uporabljajo tudi v predizdelanih sistemih toplotne izolacije in vezanih ploščah; lastnosti sistemov iz teh proizvodov niso opisane.
Ta standard ne določa zahtevane ravni določene lastnosti, ki jo mora proizvod doseči, da se dokaže njegova primernost namenu za posamezno vrsto uporabe. Zahtevane ravni za posamezno uporabo so določene v uredbah ali standardih, ki niso v nasprotju s tem standardom.
Proizvodi z deklarirano toplotno upornostjo, nižjo od 0,5 m2K/W, ali deklarirano toplotno prevodnostjo, višjo od 0,050 W/(mK) pri 10 °C, v tem evropskem standardu niso zajeti.
Ta standard ne zajema toplotnoizolacijskih proizvodov, izdelanih na kraju samem, ter proizvodov za izolacijo gradbene opreme in industrijskih napeljav (zajema jih standard EN 14313). Izključeni so tudi nepenasti materiali, npr. mehurčkasta folija, folija itd.

General Information

Status
Published
Publication Date
17-Feb-2015
Current Stage
9020 - Submission to 2 Year Review Enquiry - Review Enquiry
Due Date
15-Jul-2021
Completion Date
15-Jul-2021

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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 (PEF) - SpezifikationProduits isolants thermiques pour le bâtiment - Produits manufacturés en mousse de polyethylene (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 16069:2012+A1:2015SIST EN 16069:2013+A1:2015en,fr,de01-april-2015SIST EN 16069:2013+A1:2015SLOVENSKI

STANDARDSIST EN 16069:20131DGRPHãþD
SIST EN 16069:2013+A1:2015
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 16069:2012+A1
February 2015 ICS 91.100.60 Supersedes EN 16069:2012English 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 and includes Amendment 1 approved by CEN on 15 December 2014.

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.

EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2015 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 16069:2012+A1:2015 ESIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 2 Contents Page Foreword ..............................................................................................................................................................5 1 Scope ......................................................................................................................................................7 2 Normative references ............................................................................................................................7 3 Terms, definitions, symbols, units and abbreviated terms ...............................................................9 3.1 Terms and definitions ...........................................................................................................................9 3.2 Symbols, units and abbreviated terms ............................................................................................. 10 3.2.1 Symbols and units used in this European Standard ...................................................................... 10 3.2.2 Abbreviated terms used in this European Standard:...................................................................... 12 4 Requirements ...................................................................................................................................... 12 4.1 General ................................................................................................................................................. 12 4.2 For all applications ............................................................................................................................. 12 4.2.1 Thermal resistance and thermal conductivity ................................................................................. 12 4.2.2 Length and width ................................................................................................................................ 13 4.2.3 Thickness ............................................................................................................................................ 13 4.2.4 Squareness .......................................................................................................................................... 14 4.2.5 Flatness ............................................................................................................................................... 14 4.2.6 Reaction to fire of the product as placed on the market ................................................................ 14 4.2.7 Durability characteristics ................................................................................................................... 15 4.3 For specific applications .................................................................................................................... 15 4.3.1 General ................................................................................................................................................. 15 4.3.2 Dimensional stability .......................................................................................................................... 15 4.3.3 Compressive stress or compressive strength ................................................................................ 16 4.3.4 Tensile strength and elongation in length and width ..................................................................... 16 4.3.5 Point load ............................................................................................................................................. 17 4.3.6 Compressive creep ............................................................................................................................. 17 4.3.7 Water absorption ................................................................................................................................ 17 4.3.8 Water vapour transmission ............................................................................................................... 17 4.3.9 Dynamic stiffness ............................................................................................................................... 18 4.3.10 Compressibility ................................................................................................................................... 18 4.3.11 Sound absorption ............................................................................................................................... 19 4.3.12 Width length and thickness of preformed products ....................................................................... 19 4.3.13 Release of dangerous substances .................................................................................................... 20 4.3.14 Reaction to fire of the product in standardized assemblies simulating end-use applications ......................................................................................................................................... 20 4.3.15 Continuous glowing combustion ...................................................................................................... 21 5 Test methods ....................................................................................................................................... 21 5.1 Sampling .............................................................................................................................................. 21 5.2 Conditioning ........................................................................................................................................ 21 5.3 Testing ................................................................................................................................................. 21 5.3.1 General ................................................................................................................................................. 21 5.3.2 Thermal resistance and thermal conductivity ................................................................................. 21 6 Designation Code ............................................................................................................................... 23 7 Assessment and Verification of the Constancy of Performance (AVCP) ..................................... 24 7.1 General ................................................................................................................................................. 24 7.2 Product Type Determination (PTD) ................................................................................................... 24 7.3 Factory Production Control (FPC) .................................................................................................... 24 8 Marking and labelling ......................................................................................................................... 25 SIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 3
Annex A (normative)

Determination of the declared values of thermal resistance and thermal conductivity ......................................................................................................................................... 26 A.1 General ................................................................................................................................................. 26 A.2 Input data.............................................................................................................................................. 26 A.3 Declared values ................................................................................................................................... 26 A.3.1 General ................................................................................................................................................. 26 A.3.2 Case where thermal resistance and thermal conductivity are declared ....................................... 26 A.3.3 Case where only thermal resistance is declared ............................................................................. 27 Annex B (normative)

!Product type determination" (!PTD") and factory production control (FPC) ........................................................................................................................................ 28 Annex C (normative)

PEF multilayered insulation products ........................................................................ 31 C.1 General ................................................................................................................................................. 31 C.2 Requirements ....................................................................................................................................... 31 C.2.1 For all applications .............................................................................................................................. 31 C.2.2 For specific applications .................................................................................................................... 32 C.3 Test methods ....................................................................................................................................... 32 C.4 Evaluation of conformity .................................................................................................................... 32 Annex D (informative)

Examples for the determination of the declared values of thermal resistance and thermal conductivity for a product or a product group ........................................ 33 D.1 Case where both thermal resistance and thermal conductivity are declared ............................... 33 D.2 Case where only thermal resistance is declared ............................................................................. 34 Annex E (informative)

Additional properties .................................................................................................. 36 E.1 General ................................................................................................................................................. 36 E.2 Deformation under specific compressive load and temperature conditions ................................ 36 E.3 Compression modulus of elasticity ................................................................................................... 36 E.4 Bending strength ................................................................................................................................. 36 E.5 Apparent density ................................................................................................................................. 36 E.6 Compressive stress at defined deformation .................................................................................... 37 E.7 Air flow resistivity ................................................................................................................................ 37 E.8 Cyclic load behaviour ......................................................................................................................... 37 E.9 Shear behaviour .................................................................................................................................. 37 E.10 Peel strength ........................................................................................................................................ 37 Annex ZA (informative)

!Clauses of this European Standard addressing the provisions of the EU Construction Products Regulation" ........................................................................................ 39 ZA.1 Scope and relevant characteristics ................................................................................................... 39 ZA.2 Procedures for AVCP of factory made polyethylene foam products ............................................. 40 ZA.2.1 Systems of AVCP ................................................................................................................................ 40 ZA.2.2 Declaration of Performance (DoP) ..................................................................................................... 44 ZA.3 CE Marking and labelling .................................................................................................................... 47 SIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 4 Bibliography ..................................................................................................................................................... 49

Tables Table 1 — Level and classes for dimensional tolerances ........................................................................... 14 Table 2 — Dimensional stability under specified temperature and humidity conditions ........................ 16 Table 3 — Classes for thickness tolerances ................................................................................................. 18 Table 4 — Levels for compressibility ............................................................................................................ 19 Table 5 — Levels for dimensions of preformed products ........................................................................... 20 Table 6 — 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 !PTD" and minimum product testing frequencies ............... 28 Table B.2 — Minimum product testing frequencies for the reaction to fire characteristics .................... 30 Table D.1 —

............................................................................................................................... 33 Table D.2 — R test results .............................................................................................................................. 34 Table E.1 — Levels of bending strength ....................................................................................................... 36 Table E.2 — Levels for compressive stress at a defined deformation ....................................................... 37 Table E.3 — Test methods, test specimens, conditions and minimum testing frequencies ................... 38 Table ZA.1 — Relevant clauses for factory made polyethylene foam and intended use ......................... 39 Table ZA.2 — Systems of AVCP ..................................................................................................................... 41 Table ZA.3.1 — Assignment of AVCP tasks for factory made polyethylene foam products under system 1 for reaction to fire and system 3 (see Table ZA.2) .......................................................... 41 Table ZA.3.2 — Assignment of AVCP tasks for factory made polyethylene foam products under system 3 (see Table ZA.2) .................................................................................................................. 43 Table ZA.3.3 — Assignment of AVCP tasks for factory made polyethylene foam products under combined system 4 for reaction to fire and system 3 (see Table ZA.2) ........................................ 43

Figures Figure ZA.1 — Example CE marking information of products under AVCP system 1 and system 3 ..... 48

SIST EN 16069:2013+A1:2015
EN 16069:2012+A1:2015 (E) 5

Foreword This document (EN 16069:2012+A1:2015) 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 August 2015, and conflicting national standards shall be withdrawn at the latest by November 2016. 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 supersedes !EN 16069:2012". This document includes Amendment 1 approved by CEN on 2014-12-15. The start and finish of text introduced or altered by amendment is indicated in the text by tags !". 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 Construction Products Regulation (CPR), see informative Annex ZA, which is an integral part of this standard." !Amendment 1 modifies EN 16069:2012 identifying those clauses of the standard which are needed for the compliance of the European Standard with the Construction Products Regulation (CPR). This amendment introduces: a) an addition to the foreword; b) an addition in 3.2; c) an addition in 4.3.10.2; d) a new subclause 4.3.13; e) modification of Clause 7; f) modification of Clause 8; g) modification of Annex B; h) modification of Annex E; i) a new Annex ZA." 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. SIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 6 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+A1:2015

EN 16069:2012+A1:2015 (E) 7

1 Scope This European Standard specifies the requirements for factory made polyethylene foam (PEF) products, with or without facing or coating, which are used for thermal insulation of buildings. The products are manufactured in the form of boards or rolls or other preformed ware. 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 insulating systems and composite panels; 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 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 SIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 8 EN 12087, Thermal insulating products for building applications — Determination of long term water absorption by immersion 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) !EN ISO 13790:2008, Energy performance of buildings — Calculation of energy use for space heating and cooling (ISO 13790:2008)" ISO 16269-6:2005, Statistical interpretation of data — Part 6: Determination of statistical tolerance intervals SIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 9

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 3.1.2 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 SIST EN 16069:2013+A1:2015

EN 16069:2012+A1:2015 (E) 10 3.2 Symbols, units and abbreviated terms 3.2.1 Symbols and units used in this European Standard .p is the practical airborne sound absorption coefficient - .w 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 û0b is the relative change in width % û0d is the relative change in thickness % û0l is the relative change in length % û0s 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

is the thermal conductivity W/(m„K) 90/90 is a 90 % fractile with a confidence level of 90 % for the thermal conductivity W/(m„K) D is the declared of thermal conductivity W/(m„K) i is one test result of thermal conductivity W/(m„K) U is the design thermal conductivity W/(m„K) mean is the mean value of the measured thermal conductivity W/(m„K)

is the water vapour diffusion resistance factor - n is the number of test results - a 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

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