SIST EN 14915:2007
(Main)Solid wood panelling and cladding - Characteristics, evaluation of conformity and marking
Solid wood panelling and cladding - Characteristics, evaluation of conformity and marking
This European Standard defines and specifies the relevant characteristics and the appropriate test methods to determine these characteristics for products (including sidings) used in solid wood panelling and cladding for:
wall and ceiling panelling for internal use;
wall and ceiling cladding for external uses.
It provides for the evaluation of conformity and the requirements for marking these products.
The products are not evaluated for stiffening functions.
This European Standard covers treated as well as untreated wood and it covers finger jointed and edge glued products.
This European Standard covers products in compliance with EN 14519, EN 14951 and prEN 15146 but it also covers other solid timber products suitable for panelling and cladding.
This European Standard does not cover products which are produced from laminated layer section.
Wand- und Deckenbekleidung aus Massivholz im Innen- und Außenbereich - Eingenschaften, Bewertung der Konformität und Kennzeichnung
Diese Europäische Norm legt die wesentlichen Eigenschaften für Wand- und Deckenbekleidungen aus Massivholz sowie die geeigneten Prüfverfahren zur Bestimmung dieser Eigenschaften fest für:
3 Wand- und Deckenbekleidungen zur Verwendung im Innenbereich;
3 seitliche Wandbekleidungen zur Verwendung im Innenbereich;
3 seitliche Wandbekleidungen zur Verwendung im Außenbereich;
3 Wand- und Deckenbekleidungen zur Verwendung im Außenbereich.
Sie legt die Bewertung der Konformität und die Anforderungen für die Kennzeichnung dieser Produkte fest.
Die Produkte sind nicht für Versteifungszwecke vorgesehen. Sie sind abhängig von Konstruktionssystem und von der Endanwendung.
Diese Norm gilt für behandeltes und unbehandeltes Holz.
ANMERKUNG Die jeweiligen Produkte sind in prEN 14519, EN (175.339.02) und EN (175.339.03) festgelegt.
Lambris et bardages en bois - Caractéristiques, évaluation de conformité et marquage
La présente Norme Européenne définit et spécifie les caractéristiques pertinentes ainsi que les méthodes
d’essais appropriées pour déterminer ces caractéristiques des produits utilisés pour la réalisation de lambris
et bardages en bois massif utilisés en :
- lambris de mur et de plafonds pour usage intérieur ;
- bardages de mur et de plafond pour usage extérieur.
Elle traite de l’évaluation de la conformité et des exigences concernant le marquage de ces produits.
Les fonctions de rigidité des produits ne sont pas évaluées.
La présente Norme Européenne s’applique aux bois traités et aux bois non traités et s’applique aux produits
aboutés et collés sur chant.
La présente Norme Européenne s’applique aux produits conformes a l’EN 14519, et aux prEN 15146 et
prEN 14951 mais également aux autres produits en bois massif adaptés a la réalisation de lambris et
bardages.
La présente Norme Européenne ne s’applique pas aux produits qui proviennent de section lamellée.
Notranje in zunanje obloge iz masivnega lesa - Lastnosti, ovrednotenje skladnosti in označevanje
General Information
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Standards Content (Sample)
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.Solid wood panelling and cladding - Characteristics, evaluation of conformity and markingLambris et bardages en bois - Caractéristiques, évaluation de conformité et marquageWand- und Deckenbekleidung aus Massivholz im Innen- und Außenbereich - Eingenschaften, Bewertung der Konformität und KennzeichnungTa slovenski standard je istoveten z:EN 14915:2006SIST EN 14915:2007en79.080Polizdelki iz lesaSemi-manufactures of timberICS:SLOVENSKI
STANDARDSIST EN 14915:200701-marec-2007
EUROPEAN STANDARDNORME EUROPÉENNEEUROPÄISCHE NORMEN 14915August 2006ICS 79.080 English VersionSolid wood panelling and cladding - Characteristics, evaluationof conformity and markingLambris et bardages en bois - Caractéristiques, évaluationde conformité et marquageWand- und Deckenbekleidung aus Massivholz im Innen-und Außenbereich - Eingenschaften, Bewertung derKonformität und KennzeichnungThis European Standard was approved by CEN on 24 May 2006.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 Central Secretariat 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 Central Secretariat has the same status as the officialversions.CEN members are the national standards bodies of Austria, Belgium, 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© 2006 CENAll rights of exploitation in any form and by any means reservedworldwide for CEN national Members.Ref. No. EN 14915:2006: E
EN 14915:2006 (E) 2 Contents
Page Foreword.3 1 Scope.4 2 Normative references.4 3 Terms and definitions.5 4 Characteristics for internal and external wall and ceiling.5 4.1 General.5 4.2 Characteristics for solid wood panelling for use on internal walls and ceilings.5 4.3 Characteristics for solid wood sidings for use on internal walls.6 4.4 Characteristics for solid wood sidings for use on external walls.6 4.5 Characteristics for solid wood cladding for use on external walls and ceilings.6 4.6 Durability against biological attack.6 4.6.1 Natural durability.6 4.6.2 Timber treated against biological attack.6 5 Determination of the characteristics.7 5.1 Reaction to fire.7 5.2 Release of formaldehyde.9 5.3 Content of pentachlorophenol.10 5.4 Water vapour permeability.10 5.5 Sound absorption.10 5.6 Thermal conductivity.10 6 Evaluation of conformity.11 6.1 General.11 6.2 Initial type testing or assessment.11 6.3 Factory production control (FPC).12 6.3.1 General.12 6.3.2 Procedures when control criteria are not met.12 6.3.3 Record of documentation.12 6.3.4 FPC testing.12 7 Marking.14 Annex A (normative)
Simplified encoding system for solid wood panelling and cladding.15 Annex B (informative)
General consideration regarding durability of wood.16 B.1 General precautions (based on EN 335-2:1992, Annex A).16 B.2 Natural or conferred durability of solid wood (extract from EN 335-2:1992,
Annex A).16 B.3 Construction.17 Annex C (normative)
Formaldehyde classes.18 C.1 General.18 C.2 Panelling and cladding to be tested.18 C.3 Materials to be tested.18 Annex ZA (informative)
Clauses of this European Standard addressing the provisions of the EU Construction Products Directive.20 ZA.1 Scope and relevant characteristics.20 ZA.2 Procedure for the attestation of conformity of solid wood panelling and cladding.21 ZA.2.1 Systems of attestation of conformity.21 ZA.2.2 EC Certificate and Declaration of conformity.23 ZA.3 CE marking and labelling.25 Bibliography.28
EN 14915:2006 (E) 3 Foreword This document (EN 14915:2006) has been prepared by Technical Committee CEN/TC 175 “Round and sawn timber”, the secretariat of which is held by AFNOR. 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 December 2006, and conflicting national standards shall be withdrawn at the latest by March 2008. 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. According to the CEN/CENELEC Internal Regulations, the national standards organizations of the following countries are bound to implement this European Standard: Austria, Belgium, 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.
EN 14915:2006 (E) 4 1 Scope This European Standard defines and specifies the relevant characteristics and the appropriate test methods to determine these characteristics for products (including sidings) used in solid wood panelling and cladding for: wall and ceiling panelling for internal use; wall and ceiling cladding for external uses. It provides for the evaluation of conformity and the requirements for marking these products. The products are not evaluated for stiffening functions. This European Standard covers treated as well as untreated wood and it covers finger jointed and edge glued products. This European Standard covers products in compliance with EN 14519, EN 14951 and prEN 15146 but it also covers other solid timber products suitable for panelling and cladding. This European Standard does not cover products which are produced from laminated layer section. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. EN 326-1, Wood-based panels — Sampling, cutting and inspection — Part 1: Sampling and cutting of test pieces and expression of test results EN 350-1, Durability of wood and wood-based products — Natural durability of solid wood — Part 1: Guide to the principles of testing and classification of the natural durability of wood EN 350-2, Durability of wood and wood-based products — Natural durability of solid wood — Part 2: Guide to natural durability and treatability of selected wood species of importance in Europe EN 335-2:1992, Durability of wood and wood-based products — Definition of hazard classes of biological attack – Part 2: Application to solid wood EN 351-1, Durability of wood and wood-based products - Preservative-treated solid wood - Part 1: Classification of preservative penetration and retention EN 599-2, Durability of wood and wood-based products — Performance of preventive wood preservatives as determined by biological tests — Part 2: Classification and labelling EN 717-1, Wood based panels — Determination of formaldehyde release — Part 1: Formaldehyde emission by the chamber method EN 717-2, Wood based panels — Determination of formaldehyde release — Part 2: Formaldehyde release by the gas analysis method EN 844-9:1997, Round and sawn timber — Terminology — Part 9: Terms relating to features of sawn timber EN 1309-1:1997, Round and sawn timber — Method of measurement of dimensions — Part 1: Sawn timber EN 12524, Building materials and products — Hygrothermal properties — Tabulated design values
EN 14915:2006 (E) 5 EN 12664, Thermal performance of building materials and products — Determination of thermal resistance by means of guarded hot plate and heat flow meter methods — Dry and moist products of medium and low thermal resistance EN 13501-1, Fire classification of construction products and building elements - Part 1: Classification using test data from reaction to fire tests. EN 13556, Round and sawn timber — Nomenclature of timbers used in Europe EN 13756:2002, Wood flooring — Terminology EN 13986, Wood-based panels for use in construction — Characteristics, evaluation of conformity and marking EN ISO 354, Acoustics — Measurement of sound absorption in a reverberation room (ISO 354:2003) EN ISO 11654, Acoustics — Sound absorbers for use in buildings — Rating of sound absorption (ISO 11654:1997) EN ISO 12572, Hygrothermal performance of building materials and products — Determination of water vapour transmission properties (ISO 12572:2001) 3 Terms and definitions For the purposes of this document, the terms and definitions in EN 13756:2002, EN 844-9:1997 and
EN 1309-1:1997 and the following apply. 3.1 siding material attached to interior or exterior of the building wall where length predominates the other two dimensions, having reduced thickness NOTE North American term synonymous with wall panelling and cladding 3.2 assembled test specimen products put together, according to their method of assembly as given by the manufacturer (e.g. joined tongue to groove), to form a panelling or cladding assembly for the purpose of testing 4 Characteristics for internal and external wall and ceiling 4.1 General Characteristics shall be assessed and declared when subject to regulatory requirements and may be assessed and declared when not subject to such requirements. 4.2 Characteristics for solid wood panelling for use on internal walls and ceilings The following characteristics shall be determined: reaction to fire: see 5.1; release of formaldehyde: see 5.2; content of pentachlorophenol: see 5.3;
EN 14915:2006 (E) 6 water vapour permeability: see 5.4; sound absorption: see 5.5; thermal conductivity: see 5.6. 4.3 Characteristics for solid wood sidings for use on internal walls The following characteristics shall be determined: reaction to fire: see 5.1; release of formaldehyde: see 5.2; content of pentachlorophenol: see 5.3; thermal conductivity: see 5.6. 4.4 Characteristics for solid wood sidings for use on external walls The following characteristics shall be determined: reaction to fire: see 5.1; content of pentachlorophenol: see 5.3; water vapour permeability: see 5.4; thermal conductivity: see 5.6. 4.5 Characteristics for solid wood cladding for use on external walls and ceilings The following characteristics shall be determined: reaction to fire: see 5.1; content of pentachlorophenol: see 5.3; water vapour permeability: see 5.4; thermal conductivity: see 5.6. 4.6 Durability against biological attack 4.6.1 Natural durability If the species is listed in EN 350-2, the natural durability shall be as given therein; otherwise it shall be assessed in accordance with EN 350-1. 4.6.2 Timber treated against biological attack 4.6.2.1 General Timber treated against biological attack shall meet regulatory requirements valid in the place of use of the products.
EN 14915:2006 (E) 7 Preservative treated products shall be defined by: use class in accordance with EN 335-2; wood preservative in accordance with EN 599-2; penetration class in accordance with EN 351-1; retention of preservative in accordance with EN 351-1. 4.6.2.2 Timber Any machining, boring, planing etc. shall be completed before preservative treatment. In case of wane, the bark shall be removed. 4.6.2.3 Preservatives Wood preservatives used shall conform to the performance requirements given in EN 599-2 appropriate for the use class. 4.6.2.4 Penetration The minimum penetration shall be declared in terms of penetration classes listed in EN 351-1. 4.6.2.5 Retention The mean retention in the analytical zone (see EN 351-1) shall be equal to or greater than the retention requirement for the preservative used in the declared use class. 5 Determination of the characteristics 5.1 Reaction to fire Products meeting the definition given in Table 1 are considered to be classified without further testing (CWFT) in the class shown. Where the manufacturer wishes to declare a higher classification than given in, or other products than those covered by, Table 1, the product shall be tested and classified in accordance with EN 13501-1.
EN 14915:2006 (E) 8
Table 1 — Classes of reaction to fire performance Product Product detail e Minimum mean density f (kg/m3) Minimum thicknesses, total/minimum g (mm) End-use condition d Class c Panelling and cladding a Wood pieces with or without tongue and groove and with or without profiled surface 390 9 / 6 Without air gap or with closed air gap behind D-s2, d2 -“- -“- 390 12 / 8 -“- D-s2, d0 Panelling and cladding b -“- 390 9 / 6 With open air gap ≤≤≤≤ 20 mm behind D-s2, d0 -“- -“- 390 18 / 12 Without air gap or with open air gap behind D-s2, d0 Wood ribbon elements h Wood pieces mounted on a support frame i 390 18 Surrounded by open air on all sides j D-s2, d0 a
Mounted mechanically on a wood batten support frame, with the gap closed or filled with a substrate of at least Class A2-s1,d0 with minimum density of 10 kg/m3 or filled with a substrate of cellulose insulation material of at least Class E and with or without a vapour barrier behind. The wood product shall be designed to be mounted without open joints. b
Mounted mechanically on a wood batten support frame, with or without an open air gap behind. The wood product shall be designed to be mounted without open joints. c
Class as provided for in Commission Decision 2000/147/EC Annex Table 1. This decision is currently under review in respect to façade applications. d
An open air gap may include possibility for ventilation behind the product, while a closed air gap will exclude such ventilation. The substrate behind the air gap shall be of at least Class A2-s1,d0 with a minimum density of 10 kg/m3. Behind a closed air gap of maximum 20 mm and with vertical wood pieces, the substrate may be of at least Class D-s2,d0. e
Joints include all types of joints, e.g. butt joints and tongue and groove joints. f
Conditioned according to EN 13238. g
As illustrated in Figure 1 below. Profiled area of the exposed side of the panel not more than 20 % of the plane area, or 25 % if measured at both exposed and unexposed side of the panel. For butt joints, the larger thickness applies at the joint interface. h
Rectangular wood pieces, with or without rounded corners, mounted horizontally or vertically on a support frame and surrounded by air on all sides, mainly used close to other building elements, both in interior and exterior applications. i
Maximum exposed area (all sides of rectangular wood pieces and wood support frame) not more than 110 % of the total plane area, see Figure 2 below. j
Other building elements closer than 100 mm from the wood ribbon element (excluding its support frame) shall be of at least Class A2-s1,d0, at distances 100 mm to 300 mm of at least Class B-s1,d0 and at distances more than 300 mm of at least Class D-s2,d0.
EN 14915:2006 (E) 9
Key t1
total thickness t2
minimum thickness at any point of the profile Figure 1 — Profiles for solid wood panelling and cladding
Maximum exposed area of wood ribbon element: 2n (t+w) + a ≤ 1,10 where
n
is the number of wood pieces per metre;
t
is the thickness of each wood piece, in metres;
w
is the width of each wood piece, in metres;
a
is the exposed area of wood support frame (if any), in m2, per m2 of wood ribbon element. Figure 2 — Maximum exposed area
5.2 Release of formaldehyde Solid wood as such, without chemical treatment, without adhesive, without coating or finishing, has no formaldehyde release of significance and may be classified E1. The formaldehyde release of other solid wood panelling and cladding products shall be determined according to Annex C. The declared values are expressed in term of classes.
EN 14915:2006 (E) 10 5.3 Content of pentachlorophenol Solid wood panelling and cladding as such, without chemical treatment, without adhesive, without coating or finishing, has no PCP release. If the product contains raw materials that include PCP (may concern only soft wood treated against blue stain), then the product shall be tested according to methods valid in the country of use of the product. In case the value of 5 × 10-6 (5 ppm) is exceeded, the indication “PCP > 5 × 10-6 (5 ppm)” shall be added to the marking. 5.4 Water vapour permeability If water vapour permeability is required, either the water vapour resistance factor of the product tested as an assembled test specimen shall be taken from Table 2 or, if the manufacturer wishes to declare a better value, obtained by testing the product as an assembled test specimen according to EN ISO 12572. Table 2 — Characteristic values of water vapour permeability of wood as given in EN 12524 Wood type Density a kg/m3 Water vapour resistance factor Wet cup µ
Solid wood 300 500 700 1 000 50 70 90 110 a
For other densities, interpolation is possible.
5.5 Sound absorption If the sound absorption coefficient of a product is required, it shall either taken from Table 3 or, if the manufacturer wishes to declare a better value, obtained by testing the product as an assembled test specimen to EN ISO 354 and the result expressed according to EN ISO 11654. NOTE The sound absorption depends on finishing, geometrical characteristics etc. Table 3 — Sound absorption coefficient Sound absorption coefficient
Wood type Frequency range 250 Hz to 500 Hz Frequency range 1 000 Hz to 2 000 Hz Solid wood panelling and cladding 0,10 0,30
5.6 Thermal conductivity The thermal conductivity shall be determined only for uses subject to thermal insulation requirements. It shall either be determined according to EN 12664 or given by using tabulated values related to density as shown in Table 4, taken from EN 12524.
EN 14915:2006 (E) 11 The thermal resistance R (m2 K/W) of solid wood panelling and cladding of uniform thickness is given by the following equation: Where
t is the uniform thickness of the wood panelling and cladding in m;
λ is the thermal conductivity in W/m K. Table 4 — Design thermal conductivity values () (in conformity with EN 12524) Wood type Mean density a
at a moisture content of 12 % in kg/m3 Thermal conductivity
in W/(m K) (design value)
Solid wood 300 400 500 600 700 1 000 0,09 0,11 0,13 0,15 0,18 0,24 a
For densities not given in this table,
may be found by interpolation.
6 Evaluation of conformity 6.1 General The conformity of solid wood panelling and cladding products with the requirements of this European Standard shall be demonstrated by: initial type testing or assessment; factory production control by the manufacturer. Sampling shall be carried out at random if tests are necessary. 6.2 Initial type testing or assessment Initial type testing/assessment shall be performed to demonstrate conformity with this European Standard or be demonstrated according to information given in this European Standard. Tests previously performed in accordance with the provisions of this European Standard (same product, same characteristic, test method, system of attestation of conformity etc.) may be taken into account for initial type testing. For the purposes of testing, products may be grouped into families, where it is considered that the result for a given characteristic from any one product within the family are representative for all other products within that family.
λtR=
EN 14915:2006 (E) 12 When the product specification is amended, which could significantly change one or more of the characteristics (listed in 4.2 to 4.6 and Clause 5), the type assessment or testing shall be repeated for the appropriate characteristic(s). The verification of the characteristic(s) itself is not necessary when tabulated values of Clause 5 are used. Where wood panelling and cladding products are made from raw materials for which one or more of the characteristics in 4.2 to 4.6 and Clause 5 are already known (e.g. by the material being CE marked), the testing or assessment of such characteristics does not need to repeated for the finished product, as long as the manufacturing process does not change these characteristics. All initial type test reports shall be kept for 10 years after the date of last production of the products to which they apply. 6.3 Factory production control (FPC) 6.3.1 General The producer shall define his own control system. The producer shall establish and maintain a documentation and a production control system to ensure that the products placed on the market conform with the stated performance characteristics. The control system shall consist of procedures, regular inspections and test/or assessment; the results shall be used to control raw and other incoming materials or components, equipment, the production process and the product shall be sufficiently detailed to ensure that the conformity of the product is apparent. If the manufacturer operates a factory production control system conforming to EN ISO 9001, and made specific to the requirements of this European Standard, the above requirements are considered to be satisfied. The performance characteristics relevant to the intended application shall be controlled according to the provisions of 6.3.4. 6.3.2 Procedures when control criteria are not met Procedures to be followed when control values and criteria are not met shall be established by the producer. 6.3.3 Record of documentation The result of inspections, tests or assessments requiring action shall be recorded. Records shall be kept for at least two years, but shall also fulfil the regulatory system and/or the legal requirements of the country concerned. 6.3.4 FPC testing 6.3.4.1 General For the purposes of factory production control according to this standard, indirect testing and documentary control may be used as an alternative to the test methods used for initial type testing, as long as the manufacturer is able to demonstrate a relationship between the indirect method(s) and the characteristic in question. 6.3.4.2 Reaction to fire (expressed in term of classes) The manufacturer shall control regularly the composition of the elements produced, at a sufficient frequency to ensure that, for CWFT products, the requirements of Table 1 are satisfied and, for tested products, to ensure that the product remains in the same class as that obtained in the initial type test. If a fire retardant treated product is used, the indications given by the retardant supplier to maintain the characteristics shall be observed.
EN 14915:2006 (E) 13 6.3.4.3 Formaldehyde content (expressed in term of classes) Where the manufacturer uses no formaldehyde containing materials, he shall continue to check, with a frequency defined in his FPC manual, that no such material is used. For formaldehyde containing materials, the manufacturer shall use the provisions of Table C.1 or C.2 with a frequency sufficient to ensure that the class is obtained. A manufacturer declaring Class E2 need perform no FPC testing, unless he wishes to change this declaration. 6.3.4.4 Pentachlorophenol content (expressed in term of values) Where the manufacturer uses no pentachlorophenol containing materials, he shall continue to check, with a frequency defined in his FPC manual, that no such material is used. For pentachlorophenol containing materials, the manufacturer shall use the provisions of 5.3 with a frequency sufficient to ensure that the class is obtained. A manufacturer declaring "PCP > 5 × 10-6 (5 ppm)" need perform no FPC testing, unless he wishes to change this declaration. 6.3.4.5 Water vapour permeability (expressed in term of values) The manufacturer shall control regularly the composition of the elements produced, at a sufficient frequency to ensure that, where tabulated values are used, the requirements of Table 2 are satisfied and, for tested products, to ensure that the product remains in the same class as that obtained in the initial type test. For FPC, the manufacturer shall ensure that the species used remain the same, and elements have the same composition and class (visual class) on a continuous basis, so that no faults likely to reduce the water vapour permeability are present. 6.3.4.6 Sound absorption (expressed in term of values) The manufacturer shall control regularly the composition of the elements produced, at a sufficient frequency to ensure that, where tabulated values are used, the requirements of Table 3 are satisfied and, for tested products, to ensure that the product remains in the same class as that obtained in the initial type test. For FPC
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