Clay roofing tiles and fittings - Product definitions and specifications

This European Standard specifies requirements for clay roofing tiles and fittings for pitched roof coverings and wall cladding and lining. It applies to all tiles and fittings as defined in Clause 3. Clay roofing tiles and clay fittings which conform to this European Standard are suitable for use as roof coverings, vertical wall cladding and lining. This European Standard defines the minimum requirements for a product which if satisfactory at the time of delivery will ensure that the product is able to perform its function in relation to the performance levels declared for it, whilst subjected to the changes that occur in such materials during normal conditions of use. The results obtained according to the European Standard apply to products at the time they are offered for sale.

Dach- und Formziegel - Begriffe und Produktspezifikationen

Diese Europäische Norm legt Anforderungen an Dach- und Formziegel für Dachdeckungen geneigter Dächer sowie für Außen- und Innenwandbekleidungen fest.
Sie gilt für alle Dach- und Formziegel, wie in Abschnitt 3 definiert.
Dach- und Formziegel, die dieser Europäischen Norm entsprechen, eignen sich für Dachdeckungen und für  Außen- und Innenwandbekleidungen.
Diese Europäische Norm legt Mindestanforderungen für ein Produkt fest, welche — soweit sie im Augenblick der Auslieferung erfüllt sind — sicherstellen, dass das Produkt die erforderlichen Funktionen in Abhängigkeit der ausgewiesenen Gebrauchstauglichkeit auch unter den Veränderungen erfüllt, denen jeder Baustoff unter normalen Einsatzbedingungen ausgesetzt ist.
Die nach dieser Europäischen Norm erhaltenen Ergebnisse beziehen sich auf Produkte zum Zeitpunkt des Inverkehrbringens.

Tuiles et accessoires en terre cuite - Définitions et spécifications des produits

La présente Norme européenne spécifie les exigences relatives aux tuiles en terre cuite et accessoires
destinés aux couvertures de toitures en pente et aux bardages extérieur et intérieur.
Il s’applique à l’ensemble des tuiles et accessoires définis à l’Article 3.
Les tuiles et accessoires en terre cuite conformes à la présente Norme européenne conviennent pour être
utilisés en couvertures de toiture et bardages extérieur et intérieur.
La présente Norme européenne définit les exigences minimales concernant un produit qui, si elles sont
satisfaites au moment de la livraison, garantiront que le produit peut remplir sa fonction eu égard aux niveaux
de performance déclarés, tout en étant soumis aux modifications que ces matériaux sont susceptibles de
subir dans les conditions normales d’utilisation.
Les résultats obtenus conformément à la Norme européenne s’appliquent aux produits au moment de leur
mise en vente.

Opečni strešniki in fazonski kosi - Definicije in specifikacije izdelkov

Ta evropski standard določa zahteve za opečne strešnike in fazonske kose za obloge za poševne strehe ter zunanje in notranje obloge. Uporablja se za vse strešnike in fazonske kose iz točke 3. Opečni strešniki in opečni fazonski kosi v skladu s tem evropskim standardom so primerni za uporabo kot strešne obloge ter navpične zunanje in notranje obloge. Ta evropski standard določa minimalne zahteve za izdelek, s katerimi se bo zagotovilo, da lahko izdelek, če je v času dobave zadovoljiv, opravlja svojo funkcijo v zvezi z zanj deklariranimi ravnmi delovanja, pri čemer nanje vplivajo spremembe, do katerih pride v takih materialih v normalnih pogojih uporabe. Rezultati, pridobljeni v skladu z evropskim standardom, se uporabljajo za izdelek v času, ko je ta na prodaj.

General Information

Status
Published
Publication Date
11-Dec-2013
Technical Committee
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
22-Nov-2013
Due Date
27-Jan-2014
Completion Date
12-Dec-2013

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2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.]GHONRYDach- und Formziegel - Begriffe und ProduktspezifikationenTuiles et accessoires en terre cuite - Définitions et spécifications des produitsClay roofing tiles and fittings - Product definitions and specifications91.100.25Ceramic building products01.040.91Gradbeni materiali in gradnja (Slovarji)Construction materials and building (Vocabularies)ICS:Ta slovenski standard je istoveten z:EN 1304:2013SIST EN 1304:2014en,fr,de01-januar-2014SIST EN 1304:2014SLOVENSKI

STANDARDSIST EN 1304:20051DGRPHãþD
SIST EN 1304:2014
EUROPEAN STANDARD NORME EUROPÉENNE EUROPÄISCHE NORM
EN 1304
May 2013 ICS 01.040.91; 91.100.25 Supersedes EN 1304:2005English Version
Clay roofing tiles and fittings - Product definitions and specifications

Tuiles et accessoires en terre cuite - Définitions et spécifications des produits

Dach- und Formziegel - Begriffe und ProduktspezifikationenThis European Standard was approved by CEN on 5 April 2013.

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
Management Centre:
Avenue Marnix 17,

B-1000 Brussels © 2013 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1304:2013: ESIST EN 1304:2014

EN 1304:2013 (E) 2 Contents Page Foreword ....................................................................................................................................................... 3 1 Scope ................................................................................................................................................ 4 2 Normative references ....................................................................................................................... 4 3 Terms and definitions ...................................................................................................................... 4 3.1 General ............................................................................................................................................. 4 3.2 General ............................................................................................................................................. 5 3.3 Definitions specific to tiles and fittings with sidelock and headlock and tiles with sidelock only ................................................................................................................................................... 6 3.3.1 General ............................................................................................................................................. 6 3.4 Definitions specific to over and under tiles .................................................................................... 7 3.5 Further definitions............................................................................................................................ 7 4 Requirements ................................................................................................................................. 10 4.1 Structural characteristics .............................................................................................................. 10 4.2 Fixing .............................................................................................................................................. 11 4.3 Geometric characteristics .............................................................................................................. 11 4.3.1 General ........................................................................................................................................... 11 4.3.2 Regularity of shape ........................................................................................................................ 11 4.3.3 Camber ........................................................................................................................................... 12 4.3.4 Dimensions and dimensional tolerances ...................................................................................... 12 4.4 Physical and mechanical characteristics ...................................................................................... 14 4.4.1 Impermeability ................................................................................................................................ 14 4.4.2 Flexural strength ............................................................................................................................ 14 4.4.3 Frost resistance ............................................................................................................................. 15 4.5 Fire performance ............................................................................................................................ 15 4.5.1 External fire performance .............................................................................................................. 15 4.5.2 Reaction to fire performance ......................................................................................................... 16 4.6 Dangerous substances .................................................................................................................. 16 5 Marking and labelling ..................................................................................................................... 16 6 Evaluation of conformity................................................................................................................ 17 6.1 General ........................................................................................................................................... 17 6.2 Initial type testing ........................................................................................................................... 17 6.3 Factory production control ............................................................................................................ 17 6.4 Sampling ......................................................................................................................................... 18 6.4.1 Sampling of tiles ............................................................................................................................ 18 6.4.2 Sampling of fittings ........................................................................................................................ 18 Annex A (normative)

Initial type testing and frequency of product tests for factory production control ............................................................................................................................................ 19 Annex B (informative)

Appearance ........................................................................................................... 20 Annex C (informative)

Level(s) of frost resistance and number of cycles applicable in different countries ......................................................................................................................................... 21 Annex ZA (informative)

Clauses of this European Standard addressing the provisions of the EU Construction Products Directive ................................................................................................... 22 Bibliography................................................................................................................................................ 30

SIST EN 1304:2014

EN 1304:2013 (E) 3 Foreword This document (EN 1304:2013) has been prepared by Technical Committee CEN/TC 128 “Roof covering products for discontinuous laying and products for wall cladding”, the secretariat of which is held by IBN. 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 November 2013, and conflicting national standards shall be withdrawn at the latest by November 2013. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. CEN [and/or CENELEC] shall not be held responsible for identifying any or all such patent rights. This document supersedes EN 1304:2005. In comparison to the previous edition, the following clauses are changed: 4.4.3, 4.6, Annex C and Annex ZA. This document has been prepared under a mandate given to CEN by the European Commission and the European Free Trade Association, and supports essential requirements of EU Directive(s). For relationship with EU Directive(s), see informative Annex ZA, which is an integral part of this document. This document is part of a package of standards on clay roofing tiles and fittings. According to the CEN-CENELEC Internal Regulations, the national standards organizations 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 1304:2014

EN 1304:2013 (E) 4 1 Scope This European Standard specifies requirements for clay roofing tiles and fittings for pitched roof coverings and wall cladding and lining. It applies to all tiles and fittings as defined in Clause 3. Clay roofing tiles and clay fittings which conform to this European Standard are suitable for use as roof coverings, vertical wall cladding and lining. This European Standard defines the minimum requirements for a product which if satisfactory at the time of delivery will ensure that the product is able to perform its function in relation to the performance levels declared for it, whilst subjected to the changes that occur in such materials during normal conditions of use. The results obtained according to the European Standard apply to products at the time they are offered for sale. 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 538, Clay roofing tiles for discontinuous laying — Flexural strength test EN 539-1:2005, Clay roofing tiles for discontinuous laying — Determination of physical characteristics — Part 1:

Impermeability test EN 539-2:2013, Clay roofing tiles for discontinuous laying — Determination of physical characteristics — Part 2: Test for frost resistance EN 1024, Clay roofing tiles for discontinuous laying — Determination of geometric characteristics EN 13501-1, Fire classification of construction products and building elements — Part 1: Classification using data from reaction to fire tests EN 13501-5, Fire classification of construction products and building elements — Part 5: Classification using data from external fire exposure to roof tests 3 Terms and definitions For the purposes of this document, the following terms and definitions apply. 3.1 General 3.1.1 clay roofing tiles products for discontinuous laying on pitched roofs, and for wall cladding, which are manufactured by shaping (extrusion and/or pressing), drying and firing of the prepared clay, with or without additives Note 1 to entry: All or part of their surface can be covered with an engobe or glaze. SIST EN 1304:2014

EN 1304:2013 (E) 5 The principal types of tile are: 3.1.1.1 special tiles tiles made to shapes that vary from tile to tile for aesthetic reasons, for example hand-made tiles 3.1.1.2 tiles with sidelock and headlock tiles with one or more longitudinal and transverse interlocking device(s) 3.1.1.3 tiles with sidelock only tiles with a longitudinal interlocking device but no transverse one Note 1 to entry: They can be used to obtain variable headlaps. 3.1.1.4 tiles with headlock only tiles with a transverse interlocking device but no longitudinal one 3.1.1.5 tiles with variable headlap tiles with sidelock and headlock where the design of the tiles allows them to be fixed at varying headlaps 3.1.1.6 tiles with variable sidelap tiles with sidelock and headlock where the design allows variation in the amount of sidelap 3.1.1.7 plain tiles tiles usually with a flat surface that can be slightly cross cambered and/or longitudinally cambered and which have no interlocking system Note 1 to entry: These tiles are generally rectangular, but can have a specially shaped tail (e.g. fish-scale tiles with a rounded or sharp front edge). 3.1.1.8 overlapping tiles tiles which have no side or headlock and are profiled in an "S" shape 3.1.1.9 over and under tiles tiles with the shape of a gutter whose design makes it possible either to fix them with variable headlaps or where their headlap is fixed due to the presence of lugs on the tiles Note 1 to entry: They are made with their edges either parallel or forming a cone. 3.2 General 3.2.1 clay roofing fittings products that are complementary to the tiles and have a technical function There are two types of fittings: SIST EN 1304:2014

EN 1304:2013 (E) 6 3.2.2.1 coordinated fittings fittings that are intended to align or dimensionally interlock with the tiles with which they are to be laid

EXAMPLE interlocking verge tile, interlocking ventilation tile, tile-and-a-half, interlocking ridge tiles, interlocking or aligning hip tile, aligning valley tile, interlocking or aligning angle tiles 3.2.2.2 uncoordinated fittings fittings that are not required to align or interlock with the tile with which they are to be laid

EXAMPLE ridge tiles, hip tile, valley tile, verge tile, angle tiles 3.3 Definitions specific to tiles and fittings with sidelock and headlock and tiles with sidelock only 3.3.1 General 3.3.1.1 interlock system designed for the assembly of two adjoining tiles or fittings and usually including one or more raised parts called "ribs" and one or more concave parts called "grooves" 3.3.1.2 longitudinal interlock system allowing two tiles or fittings in the same horizontal course to be fitted together 3.3.1.3 transverse interlock system allowing two tiles or fittings from successive horizontal courses to be fitted together Note 1 to entry: Three examples of interlock are shown in Figure 1. The arrangement of ribs and grooves limits the extent of movement between the tiles and improves the resistance to the ingress of water.

Figure 1 — Examples of interlock 3.3.2 straight bond tiles and fittings tiles or coordinated fittings designed to be laid so that the longitudinal joints of successive courses are aligned SIST EN 1304:2014

EN 1304:2013 (E) 7 3.3.3 broken bond tiles and fittings tiles or coordinated fittings designed to be laid so that the longitudinal joints are shifted half a tile between successive courses Note 1 to entry: Certain types of tiles or coordinated fittings are designed to be laid either straight bonded or broken bonded. 3.3.4 flat interlocking tiles and fittings interlocking tiles or coordinating fittings whose visible surface has no rib separating the areas of water flow from the longitudinal interlocks and where the longitudinal interlocks lie below the areas of water flow (see Figure 2)

Key 1 areas of water flow 2 interlock Figure 2 — Cross section and diagram of principle 3.4 Definitions specific to over and under tiles 3.4.1 under tiles tiles designed to be laid with their concave side facing upward and resting on the roofing support Note 1 to entry: Under tiles may have no nib, or one or more nibs for laying on battens. 3.4.2 over tiles tiles designed to be laid with their concave side facing downward and straddling two under tiles Note 1 to entry: In general, the same units are used as under tiles when laid with their concave side facing upward and over tiles when they are laid with their concave side facing downward. However, the profile of under tiles can differ from that of over tiles; they can have, for example, a flat base or a shape allowing for the seating of the product on its support. In the latter case, under tiles are equipped with two lateral upright sides. 3.4.3 over and under tiles with lugs to fix the headlap over and under tiles with lugs to fix the longitudinal overlap 3.5 Further definitions 3.5.1 additive material added in small quantities to the clay mix so as to facilitate the manufacture of the tile or fitting or to improve its characteristics SIST EN 1304:2014

EN 1304:2013 (E) 8 3.5.2 efflorescense crystalline deposit of soluble salts found on the surface of tiles or fittings due to water migrating from within the tiles or fittings and evaporating on the surface 3.5.3 Ceramic coating 3.5.3.1 glaze glass-based fired coating, or the material used to obtain this effect 3.5.3.2 engobe permeable or impermeable clay-based fired coating or the material used to obtain this effect 3.5.4 treatments factory-applied hydrophilic or hydrophobic agents, which change the behaviour of the surface of the clay roofing tiles or fittings when it is wetted by water 3.5.5 crack more or less regular crack not running throughout the entire thickness of the product 3.5.6 colour variation variation in tone within one colour or within different colours in one production batch Note 1 to entry: See also Annex B. 3.5.7 surface features hollows, raised areas, spots or colours, etc. characterising an entire batch and produced specifically for aesthetic purposes (to imitate the appearance of old tiles, for example) Note 1 to entry: See also Annex B. 3.5.8 clay fold interruption of continuity affecting only the surface of the product, caused by the formation of a fold during pressing Note 1 to entry: See also Annex B. 3.5.9 Overlap dimensions 3.5.9.1 General 3.5.9.1.1 gauge length of the exposed part of the fixed tile or coordinated fitting, measured longitudinally Note 1 to entry: This is the same as the batten gauge. 3.5.9.1.2 gauge declared by the manufacturer mean value or two extreme values of the gauge as defined above, see 3.5.9.1.1 SIST EN 1304:2014

EN 1304:2013 (E) 9 3.5.9.2 General 3.5.9.2.1 cover width width of the exposed part of the tile or coordinated fitting as laid 3.5.9.2.2 cover width declared by the manufacturer mean value or two extreme values of the cover width as defined above, see 3.5.9.2.1 3.5.10 camber deviation from a straight line Note 1 to entry: For plain tiles and interlocking tiles, camber is expressed as the deviation from a straight line, either longitudinally or transversally measured at the tile edge. Note 2 to entry: For over and under tiles, camber is expressed as the deviation from a straight line measured, along the generatrix located in the bottom of the tile's concavity. 3.5.11 stratification presence in the body of strata, possibly of different colours which may go through the thickness of the body Note 1 to entry: See also Annex B. 3.5.12 nib raised part at the back of the tile or fitting, used to hook it on the underlying supporting structure, generally battens 3.5.13 body of the tile or fitting ceramic material making up the fired product 3.5.14 crazing (glaze or engobe) cracking affecting only the thickness of the glaze or engobe or the vitrified surface of a product obtained by intense reduction, and not endangering the adhesion of the glaze or engobe to the body of the product Note 1 to entry: See also Annex B. 3.5.15 fixing hole hole, which is open or easily opened without damaging the product, designed for fixing the product to the underlying supporting structure 3.5.16 underside fixing hole open hole, made in a raised area on the underside of the tile and designed to fix the tile to the support with an appropriate device SIST EN 1304:2014

EN 1304:2013 (E) 10 3.5.17 Structural faults 3.5.17.1 break structural fault consisting of a separation of the product into two or more fragments 3.5.17.2 structural crack structural fault consisting of a more or less regular crack running throughout the entire thickness of the product and visible to the naked eye 3.5.17.3 loss of nib structural fault corresponding to the complete loss of the nib in a product designed with one nib only 3.5.18 Surface faults 3.5.18.1 blistering superficial fault occurring during manufacture, consisting of superficial localised raising of material with a mean dimension of the surface area of over 10 mm 3.5.18.2 pit superficial fault consisting of a fraction of material detached from the body of the product on the visible surface of the product with a mean dimension of over 7 mm Note 1 to entry: This is often due to the expansion of a particle of, for example, chalk or pyrites. 3.5.18.3 chip superficial fault consisting of a fraction of material detached from the body of the product with a mean dimension of over 7 mm, on the visible surface of the product 3.5.19 family group of products for which the test results for one or more characteristics from any one product within the family are valid for all other products within the family 4 Requirements 4.1 Structural characteristics There shall be no manufacturing faults which prevent the proper fitting together of the products, nor any structural faults as defined in 3.5.17. For evaluation of structural characteristics, the products shall be examined with the naked eye at a distance of 30 cm to 40 cm, under normal lighting. The products tested shall comply with the acceptance criteria given in Table A.1 and Table A.3. NOTE Comments on appearance characteristics are given in Annex B. SIST EN 1304:2014

EN 1304:2013 (E) 11 4.2 Fixing Tiles and fittings may be provided with nibs and/or fixing holes but other means of fixing are permitted. NOTE 1 Over and under tiles do not necessarily have a nib. NOTE 2

Codes of practice in certain countries recommend two nail holes for certain types of tiles. When tiles and fittings are used as vertical cladding, they shall have appropriate means by which they may be fixed to an underlying support. 4.3 Geometric characteristics 4.3.1 General The geometric requirements are not applicable to uncoordinated clay fittings and special tiles. For the coordinated fittings only the relevant geometric characteristics that are necessary for their proper installation have to be determined. 4.3.2 Regularity of shape 4.3.2.1 Twist in relation to plain tiles and fittings, tiles and fittings with sidelock and headlock, tiles and fittings with sidelock only and overlapping tiles and fittings The mean value of the coefficients of twist calculated as described in EN 1024 shall comply with the requirements stated in Table 1.

Table 1 — Requirements for the mean value of coefficient of twist Tiles or fittings with total length mm Coefficient of twist Limit value % [ 300 ≤ 1,5 ≤ 300 ≤ 2,0 4.3.2.2 Uniformity of the transverse profile of over and under tiles and fittings The uniformity of the transverse profile of over and under tiles is evaluated by measuring the width of the narrow and wide parts of the tile. The difference between the largest and the smallest values of the width as set out in EN 1024 and measured at the narrow end of the tile, as well as the difference between the largest and the smallest values of the width measured at the wide end of the tile, shall not exceed 15 mm. SIST EN 1304:2014

EN 1304:2013 (E) 12 4.3.3 Camber 4.3.3.1 Tiles and fittings with sidelock and headlock, tiles and fittings with sidelock only and overlapping tiles and fittings, over and under tiles and fittings The mean value of the longitudinal camber calculated as described in EN 1024 shall comply with the requirements stated in Table 2. Table 2 — Requirement for the mean value of longitudinal camber Tiles or fittings with total length

mm Longitudinal camber Limit value % [ 300 ≤ 1,5 ≤ 300 ≤ 2,0 4.3.3.2 Plain tiles and fittings The mean value of the longitudinal and transverse cambers calculated as described in EN 1024 shall comply with the requirements stated in Table 3. Table 3 — Requirements for the mean value of longitudinal and transverse camber Tiles or fittings with total length mm Longitudinal and transverse camber Limit value % [ 300 ≤ 1,5 ≤ 300 ≤ 2,0 4.3.4 Dimensions and dimensional tolerances 4.3.4.1 General Individual dimensions or cover dimensions shall be measured according to the methods described in EN 1024.

For tiles and coordinated fittings with sidelock and headlock, and tiles or coordinated fittings with sidelock only (for the latter, in the transverse direction only), the manufacturer may choose between the declaration of the individual dimensions (a,b) or the cover dimensions (c,d), see Figure 3. Conformity to this document will thus be assessed with respect to the characteristic chosen by the manufacturer. For over and under tiles with lugs to fix the headlap, the manufacturer shall declare the minimal overlapped dimension (L2 according to EN 1024). For all other tiles or coordinated fittings, the measurements declared by the manufacturer shall be of individual products. SIST EN 1304:2014

EN 1304:2013 (E) 13
Key a and b: Dimension of an individual product

c and d: Dimension of an overlapped group of products Figure 3 — Example of determination of the tile dimensions 4.3.4.2 Individual dimensions The mean values of the length and width of tiles, measured according to the methods described in EN 1024, shall fall within ± 2,0 % of the values declared by the manufacturer. This requirement does not apply to the width of over and under tiles. 4.3.4.3 Cover dimensions (gauge) The measured value of the mean cover dimension shall fall within ± 2,0 % of the cover dimension declared by the manufacturer. For tiles with sidelock and headlock with a variable longitudinal gauge, the measured maximum gauge shall not be smaller than that declared by the manufacturer. SIST EN 1304:2014

EN 1304:2013 (E) 14 For tiles with sidelock and headlock with a variable transverse gauge, the measured maximum transverse cover dimension shall not be smaller than that declared by the manufacturer. When relevant for variable gauge tiles the manufacturer may declare the minimum headlap. When the manufacturer declares the minimum headlap, the measured minimum longitudinal gauge shall not exceed that declared by the manufacturer. 4.4 Physical and mechanical characteristics 4.4.1 Impermeability 4.4.1.1 General After carrying out the test in accordance with Method 1 or Method 2 as described in EN 539-1:2005, the clay tiles and fittings shall be classified in one of the two impermeability categories given in descending order below. Tiles or fittings for roofs classified in Category 2 shall only be used with watertight roofing underfelt. The manufacturer shall state which method he uses for his tests and the results shall be evaluated with reference to that method. 4.4.1.2 Category 1 a) Test method 1 The mean impermeability factor for test pieces after testing shall be 0,5 cm3/cm2 per day or less, and all individual results shall be 0,6 cm3/cm2 per day or less. b) Test method 2 The mean impermeability coefficient for test pieces after testing shall be 0,8 or less, and all individual results shall be 0,85 or less. 4.4.1.3 Category 2 a) Test method 1 The mean impermeability factor for test pieces after testing shall be 0,8 cm3/cm2 per day or less, and all individual results shall be 0,9 cm3/cm2 per day or less. b) Test method 2 The mean impermeability coefficient for test pieces after testing shall be 0,925 or less, and all individual results shall be 0,95 or less. 4.4.2 Flexural strength The flexure strength criteria are not applicable to fittings. The test pieces shall be considered satisfactory if, when subjected to the test method described in EN 538, they support without breaking a load of at least:  600 N for plain tiles,  900 N for flat interlocking tiles,  1 000 N for under and over tiles, SIST EN 1304:2014

EN 1304:2013 (E) 15  1 200 N for other types of tiles. 4.4.3 Frost resistance After carrying out the test in accordance with EN 539-2, the clay tiles and fittings shall be classified in one of these levels: Level 1 (150 cycles): minimum 150 cycles. If after 150 cycles none of the tiles shows any of the damage described as unacceptable according to EN 539-2:2013, Table 1. Level 2 (90 cycles): minimum 90 cycles. If after 90 cycles none of the tiles shows any of the damage described as unacceptable according to EN 539-2:2013, Table 1. Level 3 (30 cycles): minimum 30 cycles. If after 30 cycles none of the tiles shows any of the damage described as unacceptable according to EN 539-2:2013, Table 1. Except for countries already listed in Annex C with only one level, CEN members should state

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